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A260399 Positions of 1 in the infinite palindromic word at A260397. 2
1, 2, 4, 6, 7, 8, 9, 10, 12, 14, 15, 17, 18, 20, 22, 23, 24, 25, 26, 28, 30, 31, 32, 33, 34, 36, 38, 39, 40, 41, 42, 44, 46, 47, 49, 50, 52, 54, 55, 56, 57, 58, 60, 62, 63, 65, 66, 68, 70, 71, 72, 73, 74, 76, 78, 79, 81, 82, 84, 86, 87, 88, 89, 90, 92, 94 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Complement of A260398, 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, 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, A260398.

Sequence in context: A136499 A047513 A039068 * A229785 A101616 A322678

Adjacent sequences:  A260396 A260397 A260398 * A260400 A260401 A260402

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Aug 13 2015

STATUS

approved

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Last modified April 8 08:54 EDT 2020. Contains 333313 sequences. (Running on oeis4.)