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%I #5 Dec 05 2013 19:56:51
%S 2,4,6,2,10,6,14,16,9,20,1,24,26,7,5,8,0,36,0,40,21,2,1,24,5,13,54,56,
%T 1,30,0,4,66,0,7,36,74,0,1,20,1,84,0,4,90,0,94,8,0,1,1,0,1,27,110,28,
%U 0,116,0,120,0,124,126,0,130,66,134,1,1,5,0,72,146,37,150,0,0,156,0,160,9
%N Largest k such that 2n/k + 1 as well as 2nk+1 are prime, or 0 if no such number exists.
%C For n=7 the largest k is 14 since 2*7/14+1=2 is prime and 2*7*14+1=197 which is also prime.
%Y Cf. A094753.
%Y Cf. A005574.
%K nonn
%O 1,1
%A _Amarnath Murthy_, May 29 2004
%E Corrected by R. Piyo (nagoya314(AT)yahoo.com), Dec 10 2004
%E More terms from _Franklin T. Adams-Watters_, Nov 20 2006
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