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 A068737 #10 Mar 11 2024 15:43:52 %S A068737 1,25,146797,274074872265,156588834507399529975 %N A068737 Number of solenoidal flows (flow in = flow out) in an n X n square array with integer velocities in -12 .. 12. %Y A068737 By size 3 X 3, ..., 6 X 6 A068722-A068725, by velocity limit 1..13 A068726-A068738. %K A068737 nonn,more %O A068737 1,2 %A A068737 _R. H. Hardin_, Feb 26 2002 %E A068737 a(5) from _Sean A. Irvine_, Mar 10 2024