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A106141
Semiprimes (mod 5).
0
4, 1, 4, 0, 4, 0, 1, 2, 0, 1, 3, 4, 0, 3, 4, 1, 4, 1, 0, 2, 3, 2, 0, 4, 4, 2, 2, 0, 1, 2, 1, 3, 4, 0, 1, 1, 0, 3, 4, 1, 2, 3, 4, 3, 4, 1, 2, 3, 0, 1, 0, 3, 4, 1, 1, 4, 2, 3, 3, 0, 2, 4, 1, 2, 3, 0, 1, 4, 3, 4, 0, 2, 3, 4, 1, 1, 0, 2, 2, 4, 3, 4, 4, 2, 0, 2, 4, 3, 2, 4, 1, 0, 3, 4, 1, 2, 3, 0, 4, 4, 4, 1, 3, 1, 2
OFFSET
1,1
MATHEMATICA
Mod[Select[Range[400], PrimeOmega[#]==2&], 5] (* Harvey P. Dale, Nov 17 2013 *)
CROSSREFS
Cf. A001358.
Sequence in context: A143354 A324026 A171539 * A082999 A308255 A333240
KEYWORD
nonn
AUTHOR
Shyam Sunder Gupta, May 07 2005
STATUS
approved