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 A068735 #10 Mar 10 2024 00:20:43 %S A068735 1,21,73151,57201104003,9661874271897648847 %N A068735 Number of solenoidal flows (flow in = flow out) in an n X n square array with integer velocities in -10 .. 10. %Y A068735 By size 3 X 3, ..., 6 X 6 A068722-A068725, by velocity limit 1..13 A068726-A068738. %K A068735 nonn,more %O A068735 1,2 %A A068735 _R. H. Hardin_, Feb 26 2002 %E A068735 a(5) from _Sean A. Irvine_, Mar 09 2024