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A020607 Smallest nonempty set S containing prime divisors of 7k+1 for each k in S. 0
2, 3, 5, 11, 13, 23 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

CROSSREFS

Sequence in context: A089194 A050229 A053184 * A180640 A128425 A175565

Adjacent sequences:  A020604 A020605 A020606 * A020608 A020609 A020610

KEYWORD

nonn,fini,full

AUTHOR

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

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Last modified February 17 04:58 EST 2012. Contains 205985 sequences.