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%I #2 Mar 31 2012 10:28:54
%S 2,3,5,8,9,12,15,18,20,24,27,32,45,54,60,75,78,80,90,102,110,120,128,
%T 135,162,165,170,180,192,195,200,234,243,275,288,312,330,333,360,384,
%U 408,432,440,450,465,480,495,500,513,540,612,620,624,675,684,702,729
%N Integers n for which k = (7 * (256^n - 16^n) + n^2) / (n * (8n + 7)) is an integer
%C 8n + 7 is almost always prime. It is first composite for 8 * 372060 + 7 = 2976487 = 863 * 3449.
%Y Cf. A162587
%Y Cf. A158034, A158035
%Y Cf. A161896, A161897
%K easy,nonn
%O 1,1
%A _Reikku Kulon_, Jul 07 2009
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