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 A169955 #15 Aug 12 2017 02:48:42 %S A169955 1,0,3,1,6,9,30,51,198,470,1623,4830,16070,51948,175047,588120, %T A169955 2015226,6933048,24123941,84428820,297753519 %N A169955 Number of tau-isomorphism classes of spherical bitrades with |T0| = n. %H A169955 Ales Drapal, Carlo Hamalainen and Dan Rosendorf, <a href="http://arxiv.org/abs/0907.1376">An enumeration of spherical latin bitrades</a>, arXiv:0907.1376 [math.CO], Sep 16 2009. %H A169955 Carlo Hamalainen, <a href="https://bitbucket.org/carlohamalainen/spherical/src">Enumeration of spherical bitrades</a>, archive of C++ code, Sept 15, 2009. %Y A169955 Cf. A007083, A167123. %K A169955 nonn %O A169955 4,3 %A A169955 _N. J. A. Sloane_, Aug 01 2010 %E A169955 Offset corrected and a(4)-a(5) added by _Hugo Pfoertner_, Aug 11 2017