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 A068726 #9 Mar 06 2024 17:28:57 %S A068726 1,3,35,2053,569397,758541101,4855339973053,149596683621380451, %T A068726 22207207625437795523567,15894065026795563049567474623, %U A068726 54873022990102933765115144179983347,914167438412564688754864863927964270928677,73512018227635160780006728165405332017240587741389 %N A068726 Number of solenoidal flows (flow in = flow out) in an n X n square array with integer velocities in -1 .. 1. %Y A068726 By size 3 X 3, ..., 6 X 6 A068722-A068725, by velocity limit 1..13 A068726-A068738. %K A068726 nonn %O A068726 1,2 %A A068726 _R. H. Hardin_, Feb 26 2002 %E A068726 a(12)-a(13) from _Sean A. Irvine_, Mar 06 2024