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A260398 Positions of 0 in the infinite palindromic word at A260397. 3
3, 5, 11, 13, 16, 19, 21, 27, 29, 35, 37, 43, 45, 48, 51, 53, 59, 61, 64, 67, 69, 75, 77, 80, 83, 85, 91, 93, 99, 101, 107, 109, 112, 115, 117, 123, 125, 131, 133, 139, 141, 144, 147, 149, 155, 157, 163, 165, 171, 173, 176, 179, 181, 187, 189, 192, 195, 197 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Complement of A260399, 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] = {1, 1, 0}; 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]  (* A260397 *)

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

Flatten[Position[u[8], 0]]  (* A260398 *)

Flatten[Position[u[8], 1]] (* A260399 *)

CROSSREFS

Cf. A260390, A260397, A260399.

Sequence in context: A329629 A302521 A270699 * A065396 A020620 A136056

Adjacent sequences:  A260395 A260396 A260397 * A260399 A260400 A260401

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Aug 13 2015

STATUS

approved

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Last modified April 7 04:20 EDT 2020. Contains 333292 sequences. (Running on oeis4.)