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%I #3 Nov 20 2015 07:26:15
%S 1,3,8,38,223,2412,26400,371328,5636096,92242944,2278149120,
%T 57145347072,1607327566848,49562666560512
%N Number of nX2 arrays of permutations of 0..n*2-1 with rows nondecreasing modulo 2 and columns nondecreasing modulo 5.
%C Column 2 of A264659.
%e Some solutions for n=5
%e ..0..5....5..1....6..5....0..1....0..5....6..0....0..5....0..2....6..5....5..7
%e ..2..1....0..6....2..0....5..7....1..7....1..5....6..8....5..7....8..0....0..8
%e ..8..6....3..7....7..1....6..2....6..3....7..3....1..3....1..3....3..1....1..3
%e ..9..7....8..2....8..4....4..8....2..8....2..8....2..4....6..8....9..7....6..4
%e ..4..3....4..9....3..9....9..3....4..9....4..9....7..9....4..9....4..2....2..9
%Y Cf. A264659.
%K nonn
%O 1,2
%A _R. H. Hardin_, Nov 20 2015
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