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A220969
Positions in A030229 where even terms occur.
3
2, 3, 4, 7, 8, 10, 12, 14, 18, 19, 22, 24, 26, 30, 32, 35, 37, 41, 43, 46, 48, 51, 53, 57, 59, 62, 64, 66, 69, 72, 78, 80, 83, 84, 88, 91, 95, 99, 102, 103, 107, 109, 110, 115, 116, 117, 120, 122, 129, 133, 137, 138, 139, 140, 144, 146, 152, 154, 156, 160
OFFSET
1,1
COMMENTS
A030229(a(n)) mod 2 = 0; A020639(A030229(a(n))) = 2.
LINKS
PROG
(Haskell)
import Data.List (findIndices)
a220969 n = a220969_list !! (n-1)
a220969_list = map (+ 1) $ findIndices even a030229_list
CROSSREFS
Cf. A220968 (complement).
Sequence in context: A353857 A353848 A330722 * A207006 A171781 A329395
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Dec 27 2012
STATUS
approved