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 A207432 Positions of primes in A066680, the badly sieved numbers. 2
 1, 2, 3, 4, 6, 8, 9, 11, 12, 14, 16, 17, 18, 19, 21, 23, 24, 25, 27, 29, 30, 32, 34, 35, 36, 38, 39, 41, 42, 44, 46, 48, 49, 50, 52, 53, 55, 56, 58, 60, 63, 64, 66, 68, 70, 71, 73, 75, 76, 77, 79, 80, 81, 84, 85, 87, 89, 90, 93, 94, 95, 97, 98, 99, 101, 102 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS A066680(a(n)) = A000040(n). LINKS Reinhard Zumkeller, Table of n, a(n) for n = 1..10000 PROG (Haskell) import Data.List (elemIndex) import Data.Maybe (fromJust) a207432 n = (fromJust \$ elemIndex (a000040 n) a066680_list) + 1 CROSSREFS Cf. A000040. Sequence in context: A335878 A233133 A186541 * A020900 A333309 A282697 Adjacent sequences:  A207429 A207430 A207431 * A207433 A207434 A207435 KEYWORD nonn AUTHOR Reinhard Zumkeller, Feb 17 2012 STATUS approved

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Last modified May 7 18:29 EDT 2021. Contains 343652 sequences. (Running on oeis4.)