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 A070766 #8 Mar 30 2012 17:28:41 %S A070766 1,1,3,7,22,77,294,1054,3788,11326,24790,103641,164559,532510,1574252, %T A070766 2939898,4761009,21048218,24306306,95707819,205176450 %N A070766 Number of polyhexes with n cells that tile the plane. %D A070766 M. Gardner, Tiling with Polyominoes, Polyiamonds and Polyhexes. Chap. 14 in Time Travel and Other Mathematical Bewilderments. New York: W. H. Freeman, pp. 175-187, 1988. %H A070766 Joseph Myers, <a href="http://www.polyomino.org.uk/mathematics/polyform-tiling/">Polyhex tiling</a> %Y A070766 Cf. A000228-A070767, A018190-A070768, cf. A054359. %K A070766 hard,nonn %O A070766 1,3 %A A070766 _Joseph Myers_, May 05 2002 %E A070766 More terms from _Joseph Myers_, Nov 06 2003 %E A070766 a(20) and a(21) from _Joseph Myers_, Nov 17 2010