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A020587 Smallest nonempty set S containing prime divisors of 4k+1 for each k in S. 2
3, 5, 7, 11, 13, 19, 29, 53, 71 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
Table of n, a(n) for n=1..9.
CROSSREFS
Sequence in context: A212375 A040993 A078425 * A249077 A126960 A119753
Adjacent sequences: A020584 A020585 A020586 * A020588 A020589 A020590
KEYWORD
nonn,fini,full
AUTHOR
David W. Wilson
STATUS
approved

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Last modified May 15 11:50 EDT 2024. Contains 372540 sequences. (Running on oeis4.)