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%I #8 Apr 25 2012 12:15:20
%S 2,0,0,0,7,107,1117,23369,1050457,302728997
%N Least prime p = prime(k) such that prime(k+n) - prime(k) = 2^(n-1), or 0 if no such p exists.
%e a(1) = 2 = prime(1) = prime(1+1) - 2^(1-1) = 3-1,
%e a(5) = 7 = prime(4) = prime(4+5) - 2^(5-1) = 23-16,
%e a(6) = 107 = prime(28) = prime(28+6) - 2^(6-1) = 139-32,
%e a(7) = 1117 = prime(187) = prime(187+7) - 2^(7-1) = 1181-64,
%e a(8) = 23369 = prime(2605) = prime(2605+8) - 2^(8-1) = 23497-128.
%K nonn
%O 1,1
%A _Gerasimov Sergey_, Apr 24 2012
%E a(9) and a(10) from _T. D. Noe_, Apr 25 2012
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