A288624 Positions of 1 in A288622; complement of A288623.

3, 5, 7, 8, 11, 13, 14, 17, 19, 20, 23, 26, 29, 31, 33, 34, 37, 39, 40, 43, 46, 49, 51, 53, 54, 57, 59, 60, 63, 66, 69, 71, 73, 74, 77, 80, 82, 84, 85, 88, 91, 93, 95, 96, 99, 101, 102, 105, 107, 108, 111, 114, 117, 119, 121, 122, 125, 127, 128, 131, 134

Offset

1,1

Comments

Conjecture: a(n)/n->2.19..., and if m denotes this number, then -1 < m - a(n)/n) < 1 for n >= 1.

Links

Clark Kimberling, Table of n, a(n) for n = 1..10000

Mathematica

s = {0, 0}; w[0] = StringJoin[Map[ToString, s]];
w[n_] := StringReplace[w[n - 1], {"00" -> "0110", "1" -> "01"}]
Table[w[n], {n, 0, 8}]
st = ToCharacterCode[w[10]] - 48   (* A288622 *)
Flatten[Position[st, 0]]  (* A288623 *)
Flatten[Position[st, 1]]  (* A288624 *)

Crossrefs

Cf. A288622, A288623.

Sequence in context: A260518 A190333 A190061 * A168162 A047485 A024969

Adjacent sequences: A288621 A288622 A288623 * A288625 A288626 A288627

Keyword

nonn,easy

Author

Clark Kimberling, Jun 14 2017

Status

approved