%I
%S 529,667,841,1357,1403,1541,1633,1711,1769,1817,1909,1943,2059,2291,
%T 2407,2507,3161,3481,3599,3721,3953,4087,4189,4331,4489,4661,4757,
%U 4819,4897,5041,5063,5293,5561,5609,5893,6241,6431,6557,6649,6889
%N Products of exactly two Pillai primes.
%C It would not be right to call these "Pillai semiprimes" as that would better describe semiprimes k such that there exists an integer m such that m!+1 is 0 mod k and k is not 1 mod m.
%C There are no pairs (n, n+1) in this sequence since all terms are odd. The first few n such that n and n+2 are in the sequence are 11771, 14099, 19337, 32729, 32741, 34829, 37391, 38249, 39467, 40319, 41747, ...  _Charles R Greathouse IV_, Jan 28 2011
%F {A063980(i) * A063980(j)}.
%e a(2) = 23*29.
%Y Cf. A001358, A063980.
%K nonn,easy
%O 1,1
%A _Jonathan Vos Post_, Jan 28 2011
