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 A007825 #19 Apr 15 2018 21:48:45 %S A007825 1,4,10,22,42,90,182,382,742,1486,2866,5646,10878,21198,40694,78758, %T A007825 151018,291046,557746,1072050,2053586,3941038,7547726,14471102, %U A007825 27711106,53099670,101675030,194762778,372916642,714195242 %N A007825 Number of n step self-avoiding walks on 3 X infinity grid starting from (0,1). %H A007825 Sean A. Irvine, <a href="/A007825/b007825.txt">Table of n, a(n) for n = 0..39</a> %Y A007825 Cf. A302408 (starting from (0,0)), A038577, A001411. %K A007825 nonn,walk %O A007825 0,2 %A A007825 Lauren Williams (lwilliam(AT)MIT.EDU) %E A007825 Title improved and more terms from _Sean A. Irvine_, Feb 02 2018