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

Author

N. J. A. Sloane, Apr 05 2015

Keywords

• nonn

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

Crossrefs

Cf. A121217.

Cf. A010051.

Programs

Haskell

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