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A023228 Numbers n such that n and 8n + 1 both prime. +0
5
2, 5, 11, 17, 29, 71, 101, 107, 131, 137, 149, 179, 239, 269, 347, 401, 431, 449, 479, 491, 509, 557, 599, 617, 659, 677, 761, 809, 821, 857, 929, 941, 947, 977, 1151, 1187, 1229, 1289, 1307, 1361, 1367, 1409, 1487, 1559, 1571, 1601, 1619, 1667, 1697, 1811, 1871 (list; graph; listen)
OFFSET

1,1

CROSSREFS

Sequence in context: A089440 A055499 A014424 this_sequence A027429 A059987 A027426

Adjacent sequences: A023225 A023226 A023227 this_sequence A023229 A023230 A023231

KEYWORD

nonn

AUTHOR

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

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Last modified July 4 18:25 EDT 2008. Contains 140886 sequences.


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