A173905 {2,3} and the nonprimes A141468.

0, 1, 2, 3, 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, 24, 25, 26, 27, 28, 30, 32, 33, 34, 35, 36, 38, 39, 40, 42, 44, 45, 46, 48, 49, 50, 51, 52, 54, 55, 56, 57, 58, 60, 62, 63, 64, 65, 66, 68, 69, 70, 72, 74, 75, 76, 77, 78, 80, 81, 82, 84, 85, 86, 87, 88, 90, 91, 92, 93

Offset

1,3

Comments

Essentially the same as A002808, A141468, A018252, A065090, A171581 and A056653.

Links

Table of n, a(n) for n=1..72.

Crossrefs

Cf. A141468.

Sequence in context: A153276 A298866 A108408 * A171581 A063450 A353684

Adjacent sequences: A173902 A173903 A173904 * A173906 A173907 A173908

Keyword

nonn,less

Author

Juri-Stepan Gerasimov, Mar 02 2010

Extensions

Replaced the 4-fold negation in the definition by a simpler phrase - R. J. Mathar, Mar 05 2010

Status

approved