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A106144 Semiprimes (mod 8). 0
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 (list; graph; refs; listen; history; text; internal format)
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

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Last modified December 8 07:08 EST 2022. Contains 358673 sequences. (Running on oeis4.)