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Let f(n,x) = 1 + 4x + 6x^2 + 8x^3 + 9x^4 + ... + composite(n)*x^n; a(n)= smallest prime f(n,x), or 0 if no such prime exists.
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%I #3 Dec 05 2013 19:56:33

%S 5,11,19,241,91393,19004355761,3121,79,456151,113,6214345434133,

%T 647380324484508990481,23727240537882663031640150881,

%U 33371196003273361,998893713465761,251,610748560241,14136113,5228581733308860742493949409

%N Let f(n,x) = 1 + 4x + 6x^2 + 8x^3 + 9x^4 + ... + composite(n)*x^n; a(n)= smallest prime f(n,x), or 0 if no such prime exists.

%Y Cf. A088122, A088123, A088125.

%K nonn

%O 1,1

%A _Amarnath Murthy_, Sep 25 2003

%E More terms from Tom Mueller (muel4503(AT)uni-trier.de), May 04 2004