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 A267282 #3 Jan 12 2016 16:02:42 %S A267282 1,126,2840,104742,5977624,466131976 %N A267282 Number of nX(n+3) arrays of permutations of n+3 copies of 0..n-1 with every element equal to or 1 greater than any southwest or northwest neighbors modulo n and the upper left element equal to 0. %C A267282 Superdiagonal 3 of A267278. %e A267282 Some solutions for n=4 %e A267282 ..0..0..1..1..2..2..3....0..1..0..2..1..3..3....0..1..2..2..2..3..0 %e A267282 ..3..0..0..1..1..3..3....0..0..2..1..2..2..0....0..1..1..2..3..3..0 %e A267282 ..0..3..1..0..2..2..3....3..1..0..2..2..3..3....0..1..1..2..3..3..0 %e A267282 ..2..1..0..2..1..3..2....1..3..1..1..2..3..0....1..1..2..2..3..3..0 %Y A267282 Cf. A267278. %K A267282 nonn %O A267282 1,2 %A A267282 _R. H. Hardin_, Jan 12 2016