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A047976 Let (p1,p2), (p3,p4) be pairs of twin primes with p1*p2=p3+p4-1; sequence gives values of p1. +0
4
5, 11, 41, 71, 599, 641, 881, 2129, 2381, 2687, 3557, 3581, 4547, 6131, 7547, 8009, 9041, 13397, 13931, 15971, 17597, 19139, 21491, 26249, 26261, 34511, 38669, 39227, 39341, 48311, 49739, 52541, 53087, 53591 (list; graph; listen)
OFFSET

0,1
EXAMPLE

E.g. 5*7=17+19-1,11*13=71+73-1.

CROSSREFS

Cf. A047977-A047979.

Sequence in context: A046121 A023271 A159049 this_sequence A006382 A055113 A129015

Adjacent sequences: A047973 A047974 A047975 this_sequence A047977 A047978 A047979

KEYWORD

nonn

AUTHOR

Naohiro Nomoto (6284968128(AT)geocities.co.jp)

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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