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Number of 2Xn arrays of permutations of 0..n*2-1 with rows nondecreasing modulo 6 and columns nondecreasing modulo 7.
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%I #3 Nov 26 2015 20:03:07

%S 1,2,5,12,72,516,2727,29935,295297,2830610,27816612,288374240,

%T 4410043504,44410041788,716533737436,16424244452552

%N Number of 2Xn arrays of permutations of 0..n*2-1 with rows nondecreasing modulo 6 and columns nondecreasing modulo 7.

%C Row 2 of A264862.

%e Some solutions for n=4

%e ..0..1..7..4....1..7..2..3....0..7..2..3....1..7..2..4....0..1..7..2

%e ..6..2..3..5....6..0..4..5....6..1..4..5....6..0..3..5....6..3..4..5

%Y Cf. A264862.

%K nonn

%O 1,2

%A _R. H. Hardin_, Nov 26 2015