A020581 - OEIS

A020581

Smallest nonempty set S containing prime divisors of 3k+1 for each k in S.

2, 5, 7, 11, 13, 17 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,1`
	LINKS	`Table of n, a(n) for n=1..6.`
	CROSSREFS	`Sequence in context: A322969 A229470 A157829 * A081259 A177512 A118751` `Adjacent sequences: A020578 A020579 A020580 * A020582 A020583 A020584`
	KEYWORD	`nonn,fini,full`
	AUTHOR	`David W. Wilson`
	STATUS	`approved`

Last modified February 5 03:48 EST 2023. Contains 360082 sequences. (Running on oeis4.)