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.

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A285658 Positions of 0 in A285657; complement of A285659.

Original entry on oeis.org

2, 8, 12, 16, 20, 24, 30, 34, 38, 44, 48, 52, 58, 62, 66, 72, 76, 80, 86, 90, 94, 98, 102, 108, 112, 116, 122, 126, 130, 136, 140, 144, 148, 152, 158, 162, 166, 172, 176, 180, 186, 190, 194, 198, 202, 208, 212, 216, 222, 226, 230, 236, 240, 244, 248, 252
Offset: 1

Views

Author

Clark Kimberling, May 01 2017

Keywords

Comments

Conjecture: a(n)/n -> (5 + sqrt(17))/2.

Examples

			As a word, A285657 = 101111101..., in which 0 is in positions 2,8,12,16,...

Links

Crossrefs

Cf. A285551, A285658, A285659.

Programs

  • Mathematica
    s = Nest[Flatten[# /. {0 -> {1, 1}, 1 -> {1, 0, 1, 1}}] &, {0}, 10] (* A285657 *)
u = Flatten[Position[s, 0]]  (* A285658 *)
Flatten[Position[s, 1]]   (* A285659 *)
u/2 (* A286043 *)
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Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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