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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
OFFSET
1,2
COMMENTS
Complement of A260391, the positions of 0. See A260390 for a guide to related sequences.
LINKS
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
Sequence in context: A230078 A275669 A191275 * A186346 A248633 A137228
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Jul 31 2015
STATUS
approved