cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A024815 a(n) = least k such that tan(k) < tan(a(n-1)), for n >= 1, with a(0) = 0.

Original entry on oeis.org

0, 2, 5, 8, 11, 52174, 573204, 42781604, 288632526
Offset: 0

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Programs

  • PARI
    a(nn) = {last = 0; lastk = 0; print1(lastk, ", "); for (i=1, nn, k = lastk; while (tan(k) >= last, k++;); print1(k, ", "); last = tan(k); lastk = k;);} \\ Michel Marcus, Mar 23 2013

Extensions

a(7) from Michel Marcus, Mar 23 2013
a(8) from Sean A. Irvine, Jul 24 2019