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 A100856 #3 Mar 30 2012 18:50:48 %S A100856 3,5,29,727,3628811,479001613,20922789888017,6402373705728019, %T A100856 1124000727777607680023,304888344611713860501504000029, %U A100856 265252859812191058636308480000031 %N A100856 a(n) = (prime(n) - 1)! + prime(n). %Y A100856 Cf. A100857, A100858, A000040, A000142. %K A100856 nonn %O A100856 1,1 %A A100856 _Reinhard Zumkeller_, Nov 20 2004