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 A242689 #4 May 20 2014 15:49:30 %S A242689 1,0,2,0,5,0,10,0,15,1,26,4,40,11,61,26,87,57,141,108,198,193,303,330, %T A242689 432,540,652,845,932,1294,1362,1933,1940,2836,2821,4100,4009,5845, %U A242689 5746,8253,8122,11552,11538,16056,16254,22185,22806,30443,31814,41577,44169 %N A242689 Number of partitions of n with difference -3 between the number of odd parts and the number of even parts, both counted without multiplicity. %H A242689 Alois P. Heinz, <a href="/A242689/b242689.txt">Table of n, a(n) for n = 12..1000</a> %Y A242689 Column k=-3 of A242618. %K A242689 nonn %O A242689 12,3 %A A242689 _Alois P. Heinz_, May 20 2014