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A265001 Number of nX4 arrays of permutations of 4 copies of 0..n-1 with rows and columns nondecreasing.

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%I A265001 #3 Nov 29 2015 16:06:24
%S A265001 1,3,14,112,1095,13009,175865,2647438,43347498,760869739,14150265025,
%T A265001 276374334318,5629364791202
%N A265001 Number of nX4 arrays of permutations of 4 copies of 0..n-1 with rows and columns nondecreasing.
%C A265001 Column 4 of A265005.
%e A265001 Some solutions for n=4
%e A265001 ..0..0..0..3....0..0..1..1....0..0..1..2....0..0..0..0....0..0..0..2
%e A265001 ..0..1..1..3....0..0..1..1....0..1..1..2....1..1..2..3....0..1..2..3
%e A265001 ..1..2..2..3....2..2..3..3....0..2..2..3....1..2..2..3....1..1..2..3
%e A265001 ..1..2..2..3....2..2..3..3....1..3..3..3....1..2..3..3....1..2..3..3
%Y A265001 Cf. A265005.
%K A265001 nonn
%O A265001 1,2
%A A265001 _R. H. Hardin_, Nov 29 2015

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