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%I #5 Mar 30 2012 18:40:36
%S 1849,2623,3139,3397,3721,4171,4429,4453,4819,5329,5767,5917,6241,
%T 6283,6493,7009,7081,7439,7519,7663,8137,8299,9211,9409,9589,9847,
%U 9943,9991,10363,10553,10609,11023,11653,11773,11899,11911,11929,12169,12629,12877
%N Products of two primes that are not Chen primes.
%C Subset of semiprimes A001358 such that neither prime factor is a Chen prime. See also A109611 (Chen primes: primes p such that p + 2 is either a prime or a semiprime), A102540 (primes that are not Chen primes).
%F {p*q such that p is in A102540 and q is in A102540}. {s such that s is in A001358 AND p|s IMPLIES NOT(p is in A109611}.
%e a(1) = 1849 = A102540(1)*A102540(1) = 43*43.
%e a(2) = 2623 = A102540(1)*A102540(2) = 43*61.
%e a(36) = 14701 = A102540(2)*A102540(13) = 61 * 241.
%Y Cf. A000040, A001358, A109611, A102540.
%K easy,nonn
%O 1,1
%A _Jonathan Vos Post_, Mar 09 2006