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A023221 Numbers n such that n and 6n + 5 both prime. +0
2
2, 3, 7, 11, 13, 17, 29, 31, 37, 41, 43, 59, 71, 73, 79, 83, 97, 107, 109, 113, 137, 139, 151, 157, 163, 181, 191, 193, 197, 227, 239, 241, 251, 263, 269, 277, 307, 311, 317, 337, 347, 349, 367, 373, 389, 401, 409, 421, 431, 443, 449, 479, 487, 499, 503, 541, 557, 577, 587 (list; graph; listen)
OFFSET

1,1

CROSSREFS

Adjacent sequences: A023218 A023219 A023220 this_sequence A023222 A023223 A023224

Sequence in context: A045320 A045321 A045322 this_sequence A127430 A106483 A040116

KEYWORD

nonn

AUTHOR

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

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Last modified October 12 15:26 EDT 2008. Contains 144830 sequences.


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