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 A121791 #7 Aug 11 2014 23:39:58 %S A121791 1,12,97,654,3977,22624,122821,644082,3288739,16440648,80783857, %T A121791 391310240,1872763387,8870963422,41647686501,194014270964, %U A121791 897639074623,4127904278590,18879838654237,85930246593928 %N A121791 Series expansion for end-to-end distance of self-avoiding walks on the triangular lattice. %H A121791 I. Jensen, <a href="/A121791/b121791.txt">Table of n, a(n) for n = 1..40</a> [from the Jensen link below] %H A121791 I. Jensen, <a href="http://www.ms.unimelb.edu.au/~iwan/saw/SAW_ser.html">Series Expansions for Self-Avoiding Walks</a> %Y A121791 Cf. A001334 corresponding number of self-avoiding walks, A078797 series expansion for end-to-end distances of self-avoiding walks on the square lattice. %K A121791 nonn %O A121791 1,2 %A A121791 _N. J. A. Sloane_, Aug 30 2006 %E A121791 Name corrected by _Hugo Pfoertner_, Aug 11 2014