login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A020620
Smallest nonempty set S containing prime divisors of 8k+7 for each k in S.
0
3, 5, 11, 13, 17, 19, 23, 29, 31, 37, 41, 47, 53, 61, 67, 71, 83, 97, 101, 109, 163, 181, 191, 239, 263, 293, 307, 383, 431, 691, 821, 2111, 2351
OFFSET
1,1
CROSSREFS
Sequence in context: A270699 A260398 A065396 * A136056 A059636 A087894
KEYWORD
nonn,fini,full
STATUS
approved