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%I #9 Jun 16 2013 04:36:24
%S 2,6,6,48,384,1518,2037018,2037018,44279730804,424427587626
%N Least number k such that 5^(2^i) + k is prime for i = 0,1,..,n-1.
%e a(5) = 384 because k = 384 is the minimal k such that N = 5^(2^i) + k is prime for i = 0, 1, 2, 3, 4; N = 389, 409, 1009, 391009, 152587891009. But 5^(2^5) + 384 is divisible by 797 and another prime.
%Y Cf. A129613, A225560 A226281.
%K nonn,more
%O 1,1
%A _Robin Garcia_, Jun 15 2013
%E a(10) from _Giovanni Resta_, Jun 16 2013
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