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 A257458 Indices of prime powers in A257339. 3
 1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19, 20, 22, 23, 25, 27, 30, 31, 34, 35, 38, 42, 45, 47, 48, 49, 52, 53, 54, 60, 61, 63, 64, 66, 69, 70, 71, 73, 74, 81, 83, 85, 87, 89, 92, 94, 97, 100, 102, 108, 112, 114, 116, 117, 120, 125, 127, 128 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS A010055(a(n)) = 1. LINKS Reinhard Zumkeller, Table of n, a(n) for n = 1..10000 PROG (Haskell) a257458 n = a257458_list !! (n-1) a257458_list = filter ((== 1) . a010055 . a257339) [1..] CROSSREFS Cf. A257339, A010055, A257457. Sequence in context: A183219 A049533 A052419 * A179439 A047421 A004777 Adjacent sequences:  A257455 A257456 A257457 * A257459 A257460 A257461 KEYWORD nonn AUTHOR Reinhard Zumkeller, Apr 24 2015 STATUS approved

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Last modified May 7 23:48 EDT 2021. Contains 343652 sequences. (Running on oeis4.)