A020637 Smallest nonempty set S containing prime divisors of 10k+9 for each k in S.

7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 61, 67, 73, 79, 83, 89, 97, 101, 103, 107, 127, 131, 139, 149, 151, 163, 167, 173, 179, 181, 197, 199, 211, 223, 227, 233, 239, 257, 263, 283, 307, 311, 313, 331, 353, 379, 389, 397, 409, 419, 431, 439, 479

Offset

1,1

Links

Nathaniel Johnston, Table of n, a(n) for n = 1..168 (full sequence)

Crossrefs

Sequence in context: A090459 A090417 A020631 * A020633 A078873 A020603

Adjacent sequences: A020634 A020635 A020636 * A020638 A020639 A020640

Keyword

nonn,fini,full

Author

David W. Wilson

Status

approved