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 A029891 #6 Jul 10 2011 18:42:33 %S A029891 1,3,7,23,70,242,832,2983,10759,39482,145892,543877,2038831,7685211, %T A029891 29092055,110554267,421495147,1611676767 %N A029891 Number of even graphical partitions. %D A029891 R. A. Brualdi, H. J. Ryser, Combinatorial Matrix Theory, Cambridge Univ. Press, 1992. %H A029891 <a href="/index/Gra#graph_part">Index entries for sequences related to graphical partitions</a> %F A029891 Calculated using Cor. 6.3.3, Th. 6.3.6, Cor. 6.2.5 of Brualdi-Ryser. %Y A029891 Cf. A000569, A004250, A004251, A029889. %K A029891 nonn %O A029891 1,2 %A A029891 TORSTEN.SILLKE(AT)LHSYSTEMS.COM