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%I #3 Nov 26 2015 07:06:54
%S 1,2,4,15,134,978,10370,114292,2035620,29935144,567866832,14295267600,
%T 488489391072,12470564424960
%N Number of 2Xn arrays of permutations of 0..n*2-1 with rows nondecreasing modulo 4 and columns nondecreasing modulo 7.
%C Row 2 of A264831.
%e Some solutions for n=4
%e ..4..0..1..7....0..1..7..3....0..2..7..3....0..1..2..7....0..1..5..7
%e ..5..2..6..3....4..5..2..6....4..5..1..6....4..5..6..3....4..2..6..3
%Y Cf. A264831.
%K nonn
%O 1,2
%A _R. H. Hardin_, Nov 26 2015