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%I #3 Jan 26 2016 17:18:54
%S 1,10,30,182,1687,24745,586844,22971957,1520467020
%N Number of nX(n+1) arrays of permutations of n+1 copies of 0..n-1 with every element equal to or 1 greater than any north or west neighbors modulo n and the upper left element equal to 0.
%C Superdiagonal 1 of A268115.
%e Some solutions for n=6
%e ..0..0..1..2..3..4..4....0..0..1..1..2..3..4....0..1..2..2..3..4..5
%e ..0..1..2..3..3..4..5....0..1..1..2..3..4..5....1..2..3..3..4..5..0
%e ..1..2..2..3..4..5..0....1..1..2..3..4..5..5....2..3..3..4..5..0..1
%e ..1..2..3..4..5..5..0....2..2..2..3..4..5..0....3..4..4..5..0..0..1
%e ..1..2..3..4..5..5..0....2..3..3..4..5..5..0....4..4..5..0..1..1..2
%e ..1..2..3..4..5..0..1....3..4..4..5..0..0..1....5..5..0..1..2..2..3
%Y Cf. A268115.
%K nonn
%O 1,2
%A _R. H. Hardin_, Jan 26 2016
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