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 A256563 Indices of semiprimes in A166133. 3
 3, 7, 12, 11, 15, 14, 17, 24, 29, 28, 36, 35, 34, 31, 30, 47, 50, 52, 56, 58, 59, 63, 66, 25, 77, 74, 92, 89, 102, 101, 109, 107, 106, 105, 83, 116, 128, 125, 124, 143, 142, 141, 135, 131, 147, 154, 155, 156, 103, 171, 99, 96, 95, 145, 189, 259, 178, 177 (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(A001358(n)). - Ray Chandler, Apr 14 2015 PROG (Haskell) a256563 = (+ 1) . fromJust . (`elemIndex` a166133_list) . a001358 CROSSREFS Cf. A166133, A256561, A255833, A001358. Sequence in context: A323339 A057992 A082600 * A243705 A057927 A298788 Adjacent sequences:  A256560 A256561 A256562 * A256564 A256565 A256566 KEYWORD nonn AUTHOR Reinhard Zumkeller, Apr 02 2015 STATUS approved

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Last modified December 7 17:41 EST 2019. Contains 329847 sequences. (Running on oeis4.)