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 A065402 #12 Mar 07 2015 02:37:54 %S A065402 1,3,18,1452 %N A065402 Number of normal play partisan games born on day n. %C A065402 _Dean Hickerson_ and Robert Li found a(3) in 1974. %D A065402 Dan Calistrate, Marc Paulhus and David Wolfe, On the lattice structure of finite games, in More Games of No Chance (Berkeley, CA, 2000), Math. Sci. Res. Inst. Publ., 42, Cambridge Univ. Press, Cambridge, 2002, pp. 25-30. %D A065402 J. H. Conway, On Numbers and Games, Academic Press, NY, 1976. %e A065402 Day 0: 0; day 1: 1 -1 *; day 2, 18: 2 -2 1/2 -1/2 1* -1* +/-1 up upstar down downstar *2 1|* 1|0 1|0,* *|-1 0|-1 0,*|-1. %Y A065402 Cf. A065401, A065407, A047995, A037142. %K A065402 nonn,more %O A065402 0,2 %A A065402 _R. K. Guy_, Nov 23 2001