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 A181195 #7 Nov 21 2014 03:54:16 %S A181195 1,429,750325,2152061145,7372392431849,26791156423752069, %T A181195 99086837728795943389,368253691037579094795185, %U A181195 1370391973012218579798432209,5101453317266742158652901045085 %N A181195 Number of n X 8 matrices containing a permutation of 1..n*8 in increasing order rowwise, columnwise, diagonally and (downwards) antidiagonally. %C A181195 Column 8 of A181196. %H A181195 R. H. Hardin, <a href="/A181195/b181195.txt">Table of n, a(n) for n=1..100</a> %e A181195 Some solutions for 3 X 8: %e A181195 ..1..2..3..4..5..6..7..8....1..2..3..4..5..6..7.11....1..2..3..4..5..6..7.11 %e A181195 ..9.10.11.12.13.14.15.16....8..9.10.12.13.16.17.19....8..9.10.12.13.16.17.20 %e A181195 .17.18.19.20.21.22.23.24...14.15.18.20.21.22.23.24...14.15.18.19.21.22.23.24 %Y A181195 Cf. A181196. %K A181195 nonn %O A181195 1,2 %A A181195 _R. H. Hardin_, Oct 10 2010