DMTNexus member
Posts: 86 Joined: 03Jun2017 Last visit: 02Apr2020

Please only share links to OEIS sequences! I'll start: http://oeis.org/A000292 Tetrahedral (or triangular pyramidal) numbers





DMTNexus member
Posts: 86 Joined: 03Jun2017 Last visit: 02Apr2020




Comical egg spurt; Senile mumbler
Posts: 4595 Joined: 30Aug2008 Last visit: 01Apr2020 Location: square root of minus one

https://oeis.org/A000032 Lucas numbers Lots of interesting footnotes to this one. Ora, lege, lege, lege, relege et labora“To be GOVERNED is to be watched, inspected, spied upon, directed, lawdriven, numbered, regulated, enrolled, indoctrinated, preached at, controlled, checked, estimated, valued, censured, commanded, by creatures who have neither the right nor the wisdom nor the virtue to do so. To be GOVERNED is to be at every operation, at every transaction noted, registered, counted, taxed, stamped, measured, numbered, assessed, licensed, authorized, admonished, prevented, forbidden, reformed, corrected, punished. It is, under pretext of public utility, and in the name of the general interest, to be place under contribution, drilled, fleeced, exploited, monopolized, extorted from, squeezed, hoaxed, robbed; then, at the slightest resistance, the first word of complaint, to be repressed, fined, vilified, harassed, hunted down, abused, clubbed, disarmed, bound, choked, imprisoned, judged, condemned, shot, deported, sacrificed, sold, betrayed; and to crown all, mocked, ridiculed, derided, outraged, dishonored. That is government; that is its justice; that is its morality." ― PierreJoseph Proudhon



DMTNexus member
Posts: 86 Joined: 03Jun2017 Last visit: 02Apr2020

https://oeis.org/A002559 Markoff (or Markov) numbers



DMTNexus member
Posts: 86 Joined: 03Jun2017 Last visit: 02Apr2020

downwardsfromzero wrote:https://oeis.org/A000032 Lucas numbers
Lots of interesting footnotes to this one. https://oeis.org/A000045 Fibonacci numbers



Comical egg spurt; Senile mumbler
Posts: 4595 Joined: 30Aug2008 Last visit: 01Apr2020 Location: square root of minus one

muladharma wrote:https://oeis.org/A000045 Fibonacci numbers I nearly started with that one but thought it was too obvious Ora, lege, lege, lege, relege et labora“To be GOVERNED is to be watched, inspected, spied upon, directed, lawdriven, numbered, regulated, enrolled, indoctrinated, preached at, controlled, checked, estimated, valued, censured, commanded, by creatures who have neither the right nor the wisdom nor the virtue to do so. To be GOVERNED is to be at every operation, at every transaction noted, registered, counted, taxed, stamped, measured, numbered, assessed, licensed, authorized, admonished, prevented, forbidden, reformed, corrected, punished. It is, under pretext of public utility, and in the name of the general interest, to be place under contribution, drilled, fleeced, exploited, monopolized, extorted from, squeezed, hoaxed, robbed; then, at the slightest resistance, the first word of complaint, to be repressed, fined, vilified, harassed, hunted down, abused, clubbed, disarmed, bound, choked, imprisoned, judged, condemned, shot, deported, sacrificed, sold, betrayed; and to crown all, mocked, ridiculed, derided, outraged, dishonored. That is government; that is its justice; that is its morality." ― PierreJoseph Proudhon



Comical egg spurt; Senile mumbler
Posts: 4595 Joined: 30Aug2008 Last visit: 01Apr2020 Location: square root of minus one

http://oeis.org/A000384hexagonal numbers Ora, lege, lege, lege, relege et labora“To be GOVERNED is to be watched, inspected, spied upon, directed, lawdriven, numbered, regulated, enrolled, indoctrinated, preached at, controlled, checked, estimated, valued, censured, commanded, by creatures who have neither the right nor the wisdom nor the virtue to do so. To be GOVERNED is to be at every operation, at every transaction noted, registered, counted, taxed, stamped, measured, numbered, assessed, licensed, authorized, admonished, prevented, forbidden, reformed, corrected, punished. It is, under pretext of public utility, and in the name of the general interest, to be place under contribution, drilled, fleeced, exploited, monopolized, extorted from, squeezed, hoaxed, robbed; then, at the slightest resistance, the first word of complaint, to be repressed, fined, vilified, harassed, hunted down, abused, clubbed, disarmed, bound, choked, imprisoned, judged, condemned, shot, deported, sacrificed, sold, betrayed; and to crown all, mocked, ridiculed, derided, outraged, dishonored. That is government; that is its justice; that is its morality." ― PierreJoseph Proudhon



DMTNexus member
Posts: 86 Joined: 03Jun2017 Last visit: 02Apr2020

http://oeis.org/A034444 a(n) is the number of unitary divisors of n (d such that d divides n, gcd(d, n/d) = 1)
