A288672 Positions of 1 in A288670; complement of A288671.

2, 3, 6, 7, 10, 15, 16, 19, 20, 23, 28, 33, 42, 43, 46, 47, 50, 51, 54, 59, 60, 63, 64, 67, 72, 77, 86, 87, 90, 95, 104, 105, 108, 113, 122, 123, 130, 131, 138, 139, 142, 143, 146, 147, 150, 155, 156, 159, 160, 163, 168, 169, 172, 173, 176, 181, 186, 195

Offset

1,1

Comments

Conjecture: a(n)/n->3.39..., and if m denotes this number, then -1 < 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[13]] - 48   (* A288670 *)
Flatten[Position[st, 0]]  (* A288671 *)
Flatten[Position[st, 1]]  (* A288672 *)

Crossrefs

Cf. A288670, A288671.

Sequence in context: A333551 A093677 A343604 * A086495 A051733 A058632

Adjacent sequences: A288669 A288670 A288671 * A288673 A288674 A288675

Keyword

nonn,easy

Author

Clark Kimberling, Jun 15 2017

Status

approved