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A260395 Positions of 0 in the infinite palindromic word at A260394. 3
1, 4, 7, 9, 12, 15, 17, 20, 23, 25, 28, 31, 32, 33, 36, 39, 41, 44, 47, 49, 52, 55, 57, 60, 63, 65, 68, 71, 73, 76, 79, 81, 84, 87, 89, 92, 95, 96, 97, 100, 103, 105, 108, 111, 113, 116, 119, 121, 124, 127, 129, 132, 135, 137, 140, 143, 145, 148, 151, 153 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Complement of A260396, the positions of 1. See A260390 for a guide to related sequences.

LINKS

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

MATHEMATICA

u[1] = {0, 1, 1}; m[1] = {u[1][[1]]};

u[n_] := u[n] = Join[u[n - 1], m[n - 1], Reverse[u[n - 1]]];

m[k_] := {u[k][[k]]}; v = u[6]  (* A260394 *)

Table[Length[u[n]], {n, 1, 20}] (* A000225 *)

Flatten[Position[u[8], 0]] (* A260395 *)

Flatten[Position[u[8], 1]] (* A260396 *)

CROSSREFS

Cf. A260390, A260394, A260396.

Sequence in context: A310951 A310952 A007066 * A047537 A247985 A190438

Adjacent sequences:  A260392 A260393 A260394 * A260396 A260397 A260398

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Aug 13 2015

STATUS

approved

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Last modified August 7 23:38 EDT 2020. Contains 336279 sequences. (Running on oeis4.)