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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
OFFSET
1,1
CROSSREFS
Sequence in context: A103203 A105875 A031368 * A135478 A019381 A113426
KEYWORD
nonn,fini,full
STATUS
approved