A256561 - OEIS

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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

(list; graph; refs; listen; history; text; internal format)

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.