This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A080668 #5 May 21 2015 16:26:47
%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..
%t A080668 Table[n!+n^3,{n,20}] (* _Harvey P. Dale_, May 21 2015 *)
%o A080668 (PARI) factncub(n) = {sr=0; for(x=1,n, y=x!+x^3; print1(y","); sr+=1.0/y; ); print(); print(sr) }
%K A080668 easy,nonn
%O A080668 1,1
%A A080668 _Cino Hilliard_, Mar 02 2003