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 A068747 #13 Jun 14 2014 16:25:41 %S A068747 1,12961320464027,379827509377146575439,40918963843906494595507077 %N A068747 Number of potential flows in 6 X 6 array with integer velocities in -n..n, i.e., number of 6 X 6 arrays with adjacent elements differing by no more than n, counting arrays differing by a constant only once. %Y A068747 Cf. 2 X 2 A063496, 3 X 3 A068744, 4 X 4 A068745, 5 X 5 A068746, by velocity limit 1..14 A068748-A068761, solenoidal flows A068722-A068738. %K A068747 nonn %O A068747 0,2 %A A068747 _R. H. Hardin_, Feb 27 2002