A106141 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

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

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

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

MATHEMATICA

Mod[Select[Range[400], PrimeOmega[#]==2&], 5] (* Harvey P. Dale, Nov 17 2013 *)

CROSSREFS

Sequence in context: A143354 A324026 A171539 * A082999 A308255 A333240

Adjacent sequences: A106138 A106139 A106140 * A106142 A106143 A106144

KEYWORD

nonn

AUTHOR

Shyam Sunder Gupta, May 07 2005

STATUS

approved