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A086172 Numbers n such that n*prime[n]+1 is prime. 8
1, 2, 4, 6, 24, 30, 36, 42, 72, 84, 98, 100, 116, 126, 128, 144, 162, 174, 206, 212, 228, 288, 312, 318, 324, 336, 350, 360, 406, 408, 416, 418, 452, 458, 466, 498, 510, 522, 528, 530, 536, 546, 548, 556, 604, 654, 660, 666, 682, 684, 690, 708, 710, 728, 738 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

COMMENTS

See also A086173, A086174, A086175, A086176, A086177.

MATHEMATICA

Select[Range[1000], PrimeQ[ # Prime[ # ]+1]&]

CROSSREFS

Cf. A086173, A086174, A086175, A086176, A086177.

Sequence in context: A045960 A028988 A172451 * A141526 A106274 A204661

Adjacent sequences:  A086169 A086170 A086171 * A086173 A086174 A086175

KEYWORD

easy,nonn

AUTHOR

Zak Seidov (zakseidov(AT)yahoo.com), Jul 11 2003

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Last modified February 15 21:56 EST 2012. Contains 205860 sequences.