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A027754 Numbers n such that n^2 + n + 5 is prime. 2
0, 1, 2, 3, 6, 7, 11, 16, 17, 18, 21, 23, 27, 31, 32, 38, 42, 48, 51, 62, 67, 72, 73, 76, 77, 83, 86, 91, 93, 97, 108, 111, 116, 121, 126, 133, 136, 137, 146, 153, 158, 163, 172, 177, 182, 188, 191, 192, 193, 202, 212, 213, 216, 223, 226, 231, 247, 248 (list; graph; refs; listen; history; internal format)
OFFSET

1,3

LINKS

P. De Geest, World!Of Numbers

PROG

(MAGMA) [n: n in [0..1000] |IsPrime(n^2+n+5)] [From Vincenzo Librandi, Nov 20 2010]

CROSSREFS

Sequence in context: A049196 A179019 A096578 * A092857 A062404 A032875

Adjacent sequences:  A027751 A027752 A027753 * A027755 A027756 A027757

KEYWORD

nonn

AUTHOR

Patrick De Geest (pdg(AT)worldofnumbers.com)

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Last modified February 13 06:53 EST 2012. Contains 205451 sequences.