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A020610 Smallest nonempty set S containing prime divisors of 7k+5 for each k in S. 0
2, 3, 11, 13, 17, 19, 23, 31, 37, 41, 43, 73, 83, 257, 293 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..15.

CROSSREFS

Sequence in context: A135115 A107402 A082618 * A257529 A030482 A019366

Adjacent sequences:  A020607 A020608 A020609 * A020611 A020612 A020613

KEYWORD

nonn,fini,full

AUTHOR

David W. Wilson

STATUS

approved

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Last modified October 25 17:22 EDT 2021. Contains 348255 sequences. (Running on oeis4.)