A256414 Indices of prime terms in A121217.

2, 3, 10, 13, 21, 26, 34, 35, 47, 54, 61, 68, 77, 82, 91, 100, 109, 118, 127, 136, 137, 151, 156, 168, 181, 191, 201, 208, 209, 217, 240, 245, 262, 263, 278, 292, 299, 307, 320, 329, 339, 346, 367, 370, 379, 380, 405, 420, 433, 441, 446, 456, 461, 474, 488

Offset

1,1

Comments

A010051(A121217(a(n))) = 1; conjecture: sequence is strictly increasing. - Reinhard Zumkeller, Apr 05 2015

Links

Reinhard Zumkeller, Table of n, a(n) for n = 1..10000

Prog

(Haskell)
import Data.List (elemIndex); import Data.Maybe (fromJust)
a256414 = (+ 1) . fromJust . (`elemIndex` a121217_list) . a000040
-- Reinhard Zumkeller, Apr 05 2015

Crossrefs

Cf. A121217.

Cf. A010051.

Sequence in context: A203235 A256214 A256213 * A004688 A024852 A023856

Adjacent sequences: A256411 A256412 A256413 * A256415 A256416 A256417

Keyword

nonn

Author

N. J. A. Sloane, Apr 05 2015

Status

approved