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 A242691 #4 May 20 2014 15:58:33 %S A242691 1,0,2,0,2,1,4,4,5,11,13,22,18,40,36,66,54,103,92,155,142,237,235,352, %T A242691 365,518,582,782,899,1151,1378,1678,2071,2464,3050,3560,4466,5072, %U A242691 6412,7242,9113,10204,12791,14282,17901,19928,24714,27610,34062,38016,46497 %N A242691 Number of partitions of n with difference -1 between the number of odd parts and the number of even parts, both counted without multiplicity. %H A242691 Alois P. Heinz, <a href="/A242691/b242691.txt">Table of n, a(n) for n = 2..1000</a> %Y A242691 Column k=-1 of A242618. %K A242691 nonn %O A242691 2,3 %A A242691 _Alois P. Heinz_, May 20 2014