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A138887
Numbers that are not Sophie Germain primes.
2
0, 1, 4, 6, 7, 8, 9, 10, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 24, 25, 26, 27, 28, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68
OFFSET
0,3
COMMENTS
Nonnegative integers that are not in A005384.
A156660(a(n)) = 0; A053176 is a subsequence. [From Reinhard Zumkeller, Feb 18 2009]
KEYWORD
easy,nonn
AUTHOR
Omar E. Pol, Apr 05 2008
STATUS
approved