A288675 Positions of 1 in A288673; complement of A288674.

2, 7, 16, 17, 20, 25, 34, 35, 42, 43, 50, 51, 54, 55, 58, 59, 62, 67, 72, 81, 82, 85, 90, 99, 100, 107, 108, 115, 116, 119, 120, 123, 124, 127, 136, 137, 144, 145, 148, 149, 152, 153, 156, 165, 166, 173, 174, 177, 178, 181, 182, 185, 190, 191, 194, 195, 198

Offset

1,1

Comments

Conjecture: a(n)/n->3.39..., and if m denotes this number, then -2 < m - a(n)/n) < 2 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", "10" -> "000"}]
Table[w[n], {n, 0, 8}]
st = ToCharacterCode[w[14]] - 48   (* A288673 *)
Flatten[Position[st, 0]]  (* A288674 *)
Flatten[Position[st, 1]]  (* A288675 *)

Crossrefs

Cf. A288673, A288674.

Sequence in context: A338399 A262016 A129666 * A135781 A233580 A225323

Adjacent sequences: A288672 A288673 A288674 * A288676 A288677 A288678

Keyword

nonn,easy

Author

Clark Kimberling, Jun 15 2017

Status

approved