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 A264371 #3 Nov 12 2015 07:06:34 %S A264371 1,277,76729,3204336,133818624,7767356736,450847788304,24315232188224, %T A264371 1311374995519744,71269232804067408 %N A264371 Number of (7+1)X(n+1) arrays of permutations of 0..n*8+7 with each element having directed index change 0,0 0,2 1,0 or -1,-2. %C A264371 Row 7 of A264364. %e A264371 Some solutions for n=3 %e A264371 ..6..1..2..3....0..1..2..3....0..7..2..1....0..1..2..3....6..7..2..3 %e A264371 ..0..5..4..7....4.11..6..7...10.11..6..3...10.11..4..5....0..1..4..5 %e A264371 .14..9..8.11...14..5.10..9....4..5..8..9....8.15..6..7....8..9.10.11 %e A264371 .18.13.10.15....8.19.12.13...12.13.14.15...12..9.14.13...18.13.12.15 %e A264371 .12.23.16.19...22.23.18.15...22.17.16.19...22.17.16.19...16.23.14.17 %e A264371 .20.17.22.21...16.17.20.21...20.27.18.21...20.27.18.23...26.21.20.19 %e A264371 .30.31.26.27...30.31.26.27...30.25.24.23...30.21.26.25...24.25.22.27 %e A264371 .24.25.28.29...24.25.28.29...28.29.26.31...24.29.28.31...28.29.30.31 %Y A264371 Cf. A264364. %K A264371 nonn %O A264371 1,2 %A A264371 _R. H. Hardin_, Nov 12 2015