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A023209 Numbers n such that n and 3n + 4 both prime. +0
1
3, 5, 11, 13, 19, 23, 31, 41, 53, 59, 73, 79, 89, 101, 103, 109, 131, 139, 151, 173, 179, 181, 191, 199, 223, 229, 241, 251, 269, 283, 293, 311, 331, 349, 353, 373, 383, 389, 409, 431, 433, 439, 509, 521, 541, 563, 593, 599, 619, 643, 661, 683, 709, 719, 733, 739, 761 (list; graph; listen)
OFFSET

1,1

CROSSREFS

Sequence in context: A136208 A045405 A059311 this_sequence A020609 A151917 A059639

Adjacent sequences: A023206 A023207 A023208 this_sequence A023210 A023211 A023212

KEYWORD

nonn

AUTHOR

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

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.


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