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 A075215 #10 Dec 05 2014 02:41:45 %S A075215 0,0,0,0,0,1,4,36,73,258,501,999,1383,4835,4685,10576,8497,42156, %T A075215 12931,129325,84555 %N A075215 Number of anisohedral polyhexes with n cells. %C A075215 A tiling is isohedral if the symmetries of the tiling act transitively on the tiles; a shape is anisohedral if it tiles the plane, but not isohedrally. %D A075215 Branko Grünbaum and G. C. Shephard, Tilings and Patterns. W. H. Freeman, New York, 1987, Section 9.4. %H A075215 Joseph Myers, <a href="http://www.polyomino.org.uk/mathematics/polyform-tiling/">Polyhex tiling</a> %Y A075215 Cf. A070766, A075207, A075208, A075209, A075210, A075211, A075212, A075213, A075214, A075206, A075224. %K A075215 hard,nonn %O A075215 1,7 %A A075215 _Joseph Myers_, Sep 08 2002 %E A075215 More terms from _Joseph Myers_, Nov 08 2003 %E A075215 More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), May 05 2007