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%I #6 Oct 22 2013 12:55:22
%S 87249,831405,1489665,2113665,31880577,81612105,84028407,86559045,
%T 274014885,1778357505,1853263365,2276082537,9090685605,12300409857,
%U 43620860865,69654751377,248342283645,634038307449,848282877345,1123296404385,1344952805505,3307428792777
%N Pseudoprimes n to base 2 such that n+2 and n+4 are primes.
%H Shyam Sunder Gupta, <a href="/A230489/b230489.txt">Table of n, a(n) for n = 1..1076</a>
%e 87249 is a pseudoprime (base 2) and 87251 and 87253 are primes.
%Y Cf. A001567, A057942.
%K nonn
%O 1,1
%A _Shyam Sunder Gupta_, Oct 20 2013
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