Search: id:A080668
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%I A080668
%S A080668 2,10,33,88,245,936,5383,40832,363609,3629800,39918131,479003328,
%T A080668 6227022997,87178293944,1307674371375,20922789892096,355687428100913,
%U A080668 6402373705733832,121645100408838859,2432902008176648000
%N A080668 Numbers of the form n!+n^3.
%C A080668 Sum of the reciprocals = 0.6470299890164780452999873886..
%o A080668 (PARI) factncub(n) = {sr=0; for(x=1,n, y=x!+x^3; print1(y","); sr+=1.0/
               y; ); print(); print(sr) }
%Y A080668 Sequence in context: A032095 A151019 A004028 this_sequence A062453 A036369 
               A043004
%Y A080668 Adjacent sequences: A080665 A080666 A080667 this_sequence A080669 A080670 
               A080671
%K A080668 easy,nonn
%O A080668 1,1
%A A080668 Cino Hilliard (hillcino368(AT)gmail.com), Mar 02 2003

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