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A062767 3n+1, 3n+5 and 3n+7 are all prime. +0
1
2, 4, 12, 22, 32, 34, 64, 74, 92, 102, 152, 204, 274, 284, 292, 362, 432, 474, 482, 494, 554, 564, 594, 622, 624, 664, 694, 712, 792, 894, 902, 932, 1054, 1084, 1152, 1154, 1282, 1384, 1504, 1594, 1742, 1804, 1812, 1882, 1884, 1912, 2182, 2274, 2402, 2584 (list; graph; listen)
OFFSET

1,1

PROGRAM

(PARI) j=[]; for(n=1, 10000, if(isprime(3*n+1) && isprime(3*n+5) && isprime(3*n+7), j=concat(j, n))); j

CROSSREFS

Sequence in context: A166869 A121569 A099603 this_sequence A052416 A059322 A163908

Adjacent sequences: A062764 A062765 A062766 this_sequence A062768 A062769 A062770

KEYWORD

nonn

AUTHOR

Jason Earls (zevi_35711(AT)yahoo.com), Jul 17 2001

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Last modified November 25 08:46 EST 2009. Contains 167481 sequences.


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