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%I #8 Nov 10 2019 13:56:08
%S 15841,29341,52633,74665,252601,314821,476971,635401,1004653,1023121,
%T 1907851,1909001,2419385,2953711,3581761,4335241,4682833,5049001,
%U 5444489,5599765,5681809,9069229,13421773,15247621,15510041,15603391,17509501,26254801,26758057,27966709
%N Strong pseudoprimes (base-2) equal to product of 3 primes not necessarily distinct.
%C The term a(11)=1907851 is also a strong pseudoprime to base 5, cf. A020231. _M. F. Hasler_, Aug 16 2012
%H Amiram Eldar, <a href="/A112450/b112450.txt">Table of n, a(n) for n = 1..10000</a>
%e a(1) = 15841 = 7*31*73.
%Y Intersection of A014612 and A001262.
%K nonn
%O 1,1
%A _Shyam Sunder Gupta_, Dec 12 2005
%E More terms from _Amiram Eldar_, Nov 10 2019