Search: id:A118333
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%I A118333
%S A118333 2,3,5,11,23,7,17,163,443,29,73,251,4027,2477,499,199,883,47,2671,
%T A118333 308333,2099,859,510481,10429,514519,29629,51713,42337,5407,13841,
%U A118333 151733,2448023843,3133033,89101,61613,19448653009,50136277,63259211
%N A118333 Largest prime factor of n!! + (n+1)!!.
%C A118333 First five terms coincide with A118332 because n!! + (n+1)!! is prime 
               for n = 0, 1, 2, 3, 4. At n>4, n!! + (n+1)!! is always composite.
%t A118333 Table[FactorInteger[n!!+(n+1)!! ][[ -1,1]],{n,0,40}]
%Y A118333 Cf. A118332.
%Y A118333 Sequence in context: A073879 A073880 A118332 this_sequence A131101 A005384 
               A118571
%Y A118333 Adjacent sequences: A118330 A118331 A118332 this_sequence A118334 A118335 
               A118336
%K A118333 nonn
%O A118333 0,1
%A A118333 Zak Seidov (zakseidov(AT)yahoo.com), Apr 23 2006

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