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 A112737 #4 Dec 11 2013 07:20:36 %S A112737 1,1,2,8,39,171,719,2757,9751,31312,89927,229614,517854,1022224, %T A112737 1753737,2598215,3312423,3626632,3413313,2765623,1930324,1160977, %U A112737 600372,265865,100565,32250,8688,1917,348,50,7,2,0 %N A112737 On the standard 33-hole cross-shaped peg solitaire board, the number of distinct board positions after n jumps (starting with the center vacant). %C A112737 If symmetry is not taken into account, these numbers are approximately 8 times larger (except for those at the start). The sum of this (finite) sequence is 23475688, the total number of distinct board positions that can be reached from the central vacancy on the 33-hole peg solitaire board. %H A112737 George I. Bell, <a href="http://home.comcast.net/~gibell/pegsolitaire/">English Peg Solitaire</a> %H A112737 Bill Butler, <a href="http://www.durangobill.com/Peg33.html">Durango Bill's 33-hole Peg Solitaire</a> %e A112737 There are four possible first jumps, but they all lead to the same board position (rotationally equivalent), thus a(1)=1. %Y A112737 Cf. A014225, A014227. %K A112737 full,nonn,fini %O A112737 0,3 %A A112737 George Bell (gibell(AT)comcast.net), Sep 16 2005