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A020621 Smallest nonempty set S containing prime divisors of 8k+9 for each k in S. 1
5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 71, 79, 83, 97, 101, 107, 109, 113, 127, 139, 149, 151, 157, 163, 173, 193, 199, 241, 257, 307, 317, 337, 353, 389, 421, 431, 433, 467, 491, 499, 503, 509, 541, 577, 631, 641, 673, 683, 881, 1201 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Nathaniel Johnston, Table of n, a(n) for n = 1..81 (full sequence)

CROSSREFS

Sequence in context: A020626 A136207 A020624 * A020630 A216775 A020586

Adjacent sequences:  A020618 A020619 A020620 * A020622 A020623 A020624

KEYWORD

nonn,fini,full

AUTHOR

David W. Wilson

STATUS

approved

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Last modified May 6 21:35 EDT 2021. Contains 343597 sequences. (Running on oeis4.)