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 A068758 #8 Jul 30 2017 22:21:06 %S A068758 1,8119,16492629297,8617480381892283531 %N A068758 Number of potential flows in n X n array with integer velocities in -11..11, i.e., number of n X n arrays with adjacent elements differing by no more than 11, counting arrays differing by a constant only once. %Y A068758 By size 3 X 3, ..., 6 X 6 A068744-A068747, by velocity limit 1..14 A068248-A068761, solenoidal flows A068722-A068738. %K A068758 nonn %O A068758 1,2 %A A068758 _R. H. Hardin_, Feb 27 2002