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.

A204292 Binomial(n, d(n)), where d(n) = A000005(n) is the number of divisors of n.

Original entry on oeis.org

1, 1, 3, 4, 10, 15, 21, 70, 84, 210, 55, 924, 78, 1001, 1365, 4368, 136, 18564, 171, 38760, 5985, 7315, 253, 735471, 2300, 14950, 17550, 376740, 406, 5852925, 465, 906192, 40920, 46376, 52360, 94143280, 666, 73815, 82251, 76904685, 820, 118030185, 903, 7059052, 8145060
Offset: 1

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Programs

  • Mathematica
    Table[Binomial[n, DivisorSigma[0, n]], {n, 1, 50}] (* Vaclav Kotesovec, May 08 2021 *)
  • PARI
    vector(60,n,binomial(n,numdiv(n)))