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A260392 Positions of 1 in the infinite palindromic word at A260390. 3
1, 3, 5, 7, 9, 11, 12, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 36, 37, 39, 41, 43, 45, 47, 48, 49, 51, 53, 55, 57, 59, 60, 61, 63, 65, 67, 69, 71, 73, 75, 77, 79, 81, 83, 84, 85, 87, 89, 91, 93, 95, 97, 99, 101, 103, 105, 107, 108, 109, 111, 113, 115 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Complement of A260391, the positions of 0. See A260390 for a guide to related sequences.

LINKS

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

MATHEMATICA

u[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 - 1][[k]]}; u[8]  (* A260390 *)

Table[Length[u[n]], {n, 1, 20}] (* A083329 *)

Flatten[Position[u[8], 0]]      (* A260391 *)

Flatten[Position[u[8], 1]]      (* A260392 *)

CROSSREFS

Cf. A260390, A260391.

Sequence in context: A230078 A275669 A191275 * A186346 A248633 A137228

Adjacent sequences:  A260389 A260390 A260391 * A260393 A260394 A260395

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Jul 31 2015

STATUS

approved

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Last modified November 13 08:18 EST 2019. Contains 329093 sequences. (Running on oeis4.)