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.

A024414 Positions of even numbers in A024412.

Original entry on oeis.org

0, 3, 5, 9, 11, 16, 17, 18, 21, 23, 24, 27, 28, 32, 33, 34, 37, 39, 40, 42, 44, 46, 49, 50, 53, 54, 55, 58, 59, 60, 63, 65, 67, 70, 71, 74, 75, 80, 81, 84, 86, 89, 90, 94, 95, 96, 99, 100, 104, 105, 109, 110, 113, 114, 117, 118, 121, 122, 123, 126, 127, 130, 131, 134, 135, 136, 138, 140
Offset: 1

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Keywords

Programs

  • Mathematica
    s2 = Union[Flatten[Table[Table[StirlingS2[n, k], {k, 1, 200}], {n, 1, 200}]]]; Select[Range[200], EvenQ[s2[[#]]] &] - 1 (* Vaclav Kotesovec, Jul 09 2019 *)

Extensions

Missing a(1)=0 inserted and later terms corrected by Sean A. Irvine, Jul 08 2019