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A088572
Numbers n such that (2n+1)^2 - 2 is prime.
4
1, 2, 3, 4, 6, 7, 9, 10, 13, 14, 16, 17, 18, 21, 23, 24, 27, 30, 31, 34, 35, 37, 38, 44, 46, 51, 53, 58, 59, 60, 63, 65, 67, 69, 72, 77, 80, 84, 86, 88, 91, 95, 102, 105, 108, 111, 115, 116, 118, 119, 123, 126, 128, 129, 132, 133, 136, 139, 142, 146, 149, 150, 151, 154, 156, 157
OFFSET
1,2
PROG
(PARI) is(n)=isprime((2*n+1)^2-2) \\ Charles R Greathouse IV, Jun 12 2017
CROSSREFS
Sequence in context: A031403 A189578 A190859 * A366972 A071689 A187092
KEYWORD
nonn
AUTHOR
Herman H. Rosenfeld (herm3(AT)pacbell.net), Nov 17 2003
STATUS
approved