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A156287 Numbers n such that 4*n-5 is a prime number. +0
3
2, 3, 4, 6, 7, 9, 12, 13, 16, 18, 19, 21, 22, 27, 28, 33, 34, 36, 39, 42, 43, 46, 49, 51, 54, 57, 58, 61, 64, 67, 69, 72, 78, 79, 84, 88, 91, 93, 96, 97, 106, 109, 111, 112, 117, 118, 121, 123, 124, 126, 127, 132, 138, 142, 144, 148 (list; graph; listen)
OFFSET

1,1

EXAMPLE

For n=2, a(2)=3; n=9, a(9)=31

CROSSREFS

Cf. A156288

Sequence in context: A065156 A097987 A049149 this_sequence A162293 A145803 A018629

Adjacent sequences: A156284 A156285 A156286 this_sequence A156288 A156289 A156290

KEYWORD

nonn

AUTHOR

Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Feb 07 2009

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.


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