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A154331 Numbers m such that 12 m^2 is the average of a twin prime pair. 5
1, 3, 4, 6, 11, 13, 17, 20, 29, 39, 94, 108, 136, 154, 158, 172, 214, 227, 245, 256, 262, 283, 288, 290, 308, 315, 328, 357, 358, 371, 403, 413, 414, 420, 475, 491, 510, 522, 536, 543, 546, 556, 559, 561, 581, 585, 622, 630, 633, 647, 666, 669, 676, 699, 735 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

PROG

(PARI) for(i=1, 999, isprime(12*i^2+1) & isprime(12*i^2-1) & print1(i", "))

CROSSREFS

Cf. A037073, A154671.

Sequence in context: A047413 A115018 A057030 * A001130 A069825 A093040

Adjacent sequences:  A154328 A154329 A154330 * A154332 A154333 A154334

KEYWORD

nonn

AUTHOR

M. F. Hasler (www.univ-ag.fr/~mhasler), Jan 15 2009

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