%I
%S 1,10,31,170,1326,15686,279070,7353006,284780894
%N Number of nX(n+1) arrays of permutations of n+1 copies of 0..n1 with every element equal to or 1 greater than any west or southwest neighbors modulo n and the upper left element equal to 0.
%C Superdiagonal 1 of A267562.
%e Some solutions for n=4
%e ..0..1..2..2..3....0..1..2..3..0....0..0..1..1..2....0..1..2..2..3
%e ..0..1..1..2..3....1..2..3..0..1....3..0..1..2..3....0..1..2..3..3
%e ..0..1..2..3..0....2..3..3..0..1....3..0..1..2..3....0..1..2..3..0
%e ..0..1..2..3..3....2..2..3..0..1....3..0..1..2..2....1..1..2..3..0
%Y Cf. A267562.
%K nonn
%O 1,2
%A _R. H. Hardin_, Jan 17 2016
