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Products of 2 primes of the form 3*k-+1.
1

%I #3 Mar 30 2012 18:52:40

%S 4,10,14,22,25,26,34,35,38,46,49,55,58,62,65,74,77,82,85,86,91,94,95,

%T 106,115,118,119,121,122,133,134,142,143,145,146,155,158,161,166,169,

%U 178,185,187,194,202,203,205,206,209,214,215,217,218,221,226,235,247

%N Products of 2 primes of the form 3*k-+1.

%C Semiprimes without 3*primes (or triple the primes).

%C Numbers of the form A045344(i)*A045344(j), any i, j. [From _R. J. Mathar_, Apr 27 2010]

%Y Cf. A001358, A001748, A100959.

%K nonn

%O 1,1

%A _Juri-Stepan Gerasimov_, Apr 20 2010

%E Entries checked by _R. J. Mathar_, Apr 27 2010