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 A077170 #5 Dec 05 2013 19:55:49 %S A077170 1,3,6,10,259200,87178291200,202741834014720,484725313854093312000000, %T A077170 4438779300500903005519872000000, %U A077170 346902756482949716983678260882702336000000000 %N A077170 Final terms of rows of A077168. %Y A077170 Cf. A077168, A077169. %K A077170 nonn %O A077170 0,2 %A A077170 _Amarnath Murthy_, Nov 01 2002 %E A077170 More terms from _Sascha Kurz_, Feb 10 2003