Search: id:A119662
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%I A119662
%S A119662 2,3,7,41,757
%N A119662 Primes of the form n! + n^2 + 1.
%C A119662 Primes of the form A004664(n) + 1. For n! + n^2 + 1 to be prime, n>1, 
               it is necessary but not sufficient for n to be even. 74! + 74^2 + 
               1 is composite, with 108 digits; the next possible prime of the form 
               n! + n^2 + 1 has n>75.
%F A119662 A000040 INTERSECTION {n! + n^2 + 1}.
%t A119662 lst={};Do[s=n!+n^2;If[PrimeQ[p=s+1], AppendTo[lst, p]], {n, 0, 5!}];lst 
               [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Sep 27 2008]
%Y A119662 Cf. A000040, A004664, A119448.
%Y A119662 Sequence in context: A047024 A037843 A102604 this_sequence A163157 A000945 
               A126263
%Y A119662 Adjacent sequences: A119659 A119660 A119661 this_sequence A119663 A119664 
               A119665
%K A119662 easy,nonn,less
%O A119662 1,1
%A A119662 Jonathan Vos Post (jvospost3(AT)gmail.com), Jul 28 2006

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