A106144 Semiprimes (mod 8).

4, 6, 1, 2, 6, 7, 5, 6, 1, 2, 1, 2, 3, 6, 7, 6, 1, 3, 7, 1, 2, 6, 1, 5, 2, 5, 2, 5, 6, 7, 3, 5, 6, 7, 2, 7, 3, 6, 7, 1, 2, 3, 1, 5, 6, 5, 6, 7, 1, 2, 3, 6, 7, 1, 6, 1, 1, 2, 7, 1, 3, 2, 1, 2, 3, 5, 6, 1, 5, 6, 7, 1, 2, 3, 5, 2, 3, 5, 7, 1, 5, 6, 3, 6, 1, 3, 2, 6, 7, 1, 3, 7, 2, 3, 5, 6, 7, 1, 5, 2, 7, 1, 3, 6, 7

Offset

1,1

Links

Table of n, a(n) for n=1..105.

Mathematica

Mod[#, 8]&/@Select[Range[400], PrimeOmega[#]==2&] (* Harvey P. Dale, Nov 28 2015 *)

Crossrefs

Cf. A001358.

Sequence in context: A190282 A164833 A248938 * A154478 A255695 A246489

Adjacent sequences: A106141 A106142 A106143 * A106145 A106146 A106147

Keyword

nonn

Author

Shyam Sunder Gupta, May 07 2005

Status

approved