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 A264427 #3 Nov 12 2015 23:05:16 %S A264427 3,1462,44264,2486429,147984724,7577203142,396849643846, %T A264427 20924743041507,1094394105909728 %N A264427 Number of (6+1)X(n+1) arrays of permutations of 0..n*7+6 with each element having directed index change 0,1 2,2 1,0 -1,2 -2,-1 or -1,-1. %C A264427 Row 6 of A264422. %e A264427 Some solutions for n=3 %e A264427 ..9..6.11..5....5..6..1..2....5..6..7..2....9..6..7..2....9..0..7..5 %e A264427 ..0..1..2..3....9.10.11..3....9..1.15..3....0..1.11..3...13..1..2..3 %e A264427 ..4..8.15..7....4.18..0..7....4.14..0.10....4..5.19.10....4.14..6.10 %e A264427 .21.22.10.14....8.12.19.14...21.22.23.11....8.18.23.14....8.18.23.11 %e A264427 .12.13.17.18...21.13.23.15...12.13..8.18...12.22.27.15...12.22.27.15 %e A264427 .25.26.27.19...25.17.27.22...25.26.27.19...25.17.21.13...25.26.24.19 %e A264427 .20.24.16.23...20.24.16.26...20.24.16.17...20.24.16.26...20.21.16.17 %Y A264427 Cf. A264422. %K A264427 nonn %O A264427 1,1 %A A264427 _R. H. Hardin_, Nov 12 2015