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A020628
Smallest nonempty set S containing prime divisors of 9k+6 for each k in S.
0
3, 5, 7, 11, 13, 17, 23, 41, 43, 53, 71, 79, 83, 127, 131, 151, 239, 251, 383, 691, 719, 1151
OFFSET
1,1
CROSSREFS
Sequence in context: A063908 A154868 A274987 * A108816 A088503 A118939
KEYWORD
nonn,fini,full
STATUS
approved