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A020613 Smallest nonempty set S containing prime divisors of 7k+9 for each k in S. 0
2, 5, 11, 17, 23, 31, 43, 113 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

CROSSREFS

Sequence in context: A103203 A105875 A031368 * A135478 A019381 A113426

Adjacent sequences:  A020610 A020611 A020612 * A020614 A020615 A020616

KEYWORD

nonn,fini,full

AUTHOR

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

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Last modified February 14 23:53 EST 2012. Contains 205689 sequences.