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A008470 At least 3 out of 10m+1, 10m+3, 10m+7, 10m+9 are primes. +0
1
1, 4, 7, 10, 13, 19, 22, 31, 43, 46, 61, 64, 82, 85, 88, 103, 106, 109, 130, 142, 145, 148, 160, 166, 169, 178, 187, 199, 208, 238, 268, 271, 316, 325, 346, 367, 376, 391, 400, 409, 415, 421, 451, 472 (list; graph; listen)
OFFSET

0,2

CROSSREFS

Sequence in context: A143455 A087065 A001197 this_sequence A002640 A096675 A069212

Adjacent sequences: A008467 A008468 A008469 this_sequence A008471 A008472 A008473

KEYWORD

nonn

AUTHOR

Olivier Gerard (olivier.gerard(AT)gmail.com)

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Last modified December 4 14:15 EST 2008. Contains 151279 sequences.


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