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Search: id:A031215
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A031215 (2n)-th prime. +0
4
3, 7, 13, 19, 29, 37, 43, 53, 61, 71, 79, 89, 101, 107, 113, 131, 139, 151, 163, 173, 181, 193, 199, 223, 229, 239, 251, 263, 271, 281, 293, 311, 317, 337, 349, 359, 373, 383, 397, 409, 421, 433, 443, 457, 463, 479, 491, 503, 521, 541, 557, 569 (list; graph; listen)
OFFSET

1,1

COMMENT

Also every second odd prime. - Cino Hilliard (hillcino368(AT)hotmail.com), Dec 02 2007

MAPLE

with(numtheory): A031215 := n->ithprime(2*n);

CROSSREFS

Cf. A000040, A031368.

Sequence in context: A100458 A000960 A147614 this_sequence A099957 A086148 A167462

Adjacent sequences: A031212 A031213 A031214 this_sequence A031216 A031217 A031218

KEYWORD

nonn

AUTHOR

Jeff Burch (jmburch(AT)osprey.smcm.edu)

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Last modified December 3 22:15 EST 2009. Contains 170310 sequences.


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