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A008471 Exactly 3 out of 10m+1, 10m+3, 10m+7, 10m+9 are primes. +0
1
4, 7, 13, 22, 31, 43, 46, 61, 64, 85, 88, 103, 106, 109, 130, 142, 145, 160, 166, 169, 178, 199, 238, 268, 271, 316, 367, 376, 391, 400, 409, 415, 421, 451, 472, 478, 493, 523, 541, 544, 547, 550, 574 (list; graph; listen)
OFFSET

0,1
CROSSREFS

Sequence in context: A100848 A051458 A068940 this_sequence A111314 A139217 A038391

Adjacent sequences: A008468 A008469 A008470 this_sequence A008472 A008473 A008474

KEYWORD

nonn

AUTHOR

Olivier Gerard (ogerard(AT)ext.jussieu.fr)

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

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