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.

A288134 Positions of 1 in A288132; complement of A288133.

Original entry on oeis.org

3, 5, 6, 8, 9, 10, 11, 13, 14, 15, 16, 17, 18, 19, 20, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 72, 73, 74
Offset: 1

Views

Author

Clark Kimberling, Jun 07 2017

Keywords

Comments

a(n+1)/a(n) -> 1.

Crossrefs

Programs

  • Mathematica
    s = {0, 0}; w[0] = StringJoin[Map[ToString, s]];
    w[n_] := StringReplace[w[n - 1], {"00" -> "0010", "1" -> "11"}]
    Table[w[n], {n, 0, 8}]
    st = ToCharacterCode[w[11]] - 48   (* A288132 *)
    Flatten[Position[st, 0]]  (* A288133 *)
    Flatten[Position[st, 1]]  (* A288134 *)