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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
OFFSET
1,2
COMMENTS
A066680(a(n)) = A000040(n).
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: A233133 A364216 A186541 * A020900 A333309 A282697
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Feb 17 2012
STATUS
approved