A020581 Smallest nonempty set S containing prime divisors of 3k+1 for each k in S.

2, 5, 7, 11, 13, 17

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