A256561 Indices of primes in A166133.

2, 4, 8, 6, 10, 16, 21, 19, 23, 40, 38, 32, 42, 44, 48, 54, 60, 62, 68, 80, 78, 72, 91, 111, 114, 88, 86, 120, 118, 130, 137, 133, 150, 152, 168, 162, 97, 192, 188, 182, 176, 186, 160, 215, 280, 291, 122, 226, 222, 220, 240, 263, 275, 300, 245, 277, 329, 257

Offset

1,1

Links

Reinhard Zumkeller and Ray Chandler, Table of n, a(n) for n = 1..10000 (first 1000 terms from Reinhard Zumkeller)

Formula

a(n) = A255833(A000040(n)). - Ray Chandler, Apr 14 2015

Prog

(Haskell)
a256561 = (+ 1) . fromJust . (`elemIndex` a166133_list) . a000040

Crossrefs

Cf. A166133, A256563, A255833, A000040.

Sequence in context: A320151 A121711 A249681 * A125597 A366170 A151732

Adjacent sequences: A256558 A256559 A256560 * A256562 A256563 A256564

Keyword

nonn

Author

Reinhard Zumkeller, Apr 02 2015

Status

approved