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Search: id:A023206
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A023206 Numbers n such that n and 2n + 7 both prime. +0
3
2, 3, 5, 11, 17, 23, 41, 47, 53, 71, 83, 113, 131, 137, 173, 191, 197, 227, 251, 257, 281, 293, 317, 347, 383, 401, 461, 467, 503, 521, 587, 593, 641, 647, 677, 683, 701, 743, 773, 797, 857, 863, 941, 947, 953, 971, 983, 1031, 1061, 1103, 1151, 1163, 1187, 1193, 1217 (list; graph; listen)
OFFSET

1,1

CROSSREFS

Sequence in context: A049553 A049595 A107438 this_sequence A049565 A094480 A038909

Adjacent sequences: A023203 A023204 A023205 this_sequence A023207 A023208 A023209

KEYWORD

nonn

AUTHOR

David W. Wilson (davidwwilson(AT)comcast.net)

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


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