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A264705 Number of 2Xn arrays of permutations of 0..n*2-1 with rows nondecreasing modulo 2 and columns nondecreasing modulo 6. 0

%I

%S 1,3,15,212,3712,96256,3423168,158521536,8362014912,635861560320,

%T 51551078842368

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

%C Row 2 of A264704.

%e Some solutions for n=6

%e ..2..0..8.10..7..1....8..0..6..1..7..3....0..6..4..3..9..7....4..6..8..0..7..9

%e ..4..6..9.11..5..3....4.10..2..5.11..9....8..2.10..5.11..1...10..2.11..5..1..3

%Y Cf. A264704.

%K nonn

%O 1,2

%A _R. H. Hardin_, Nov 21 2015

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Last modified August 19 23:59 EDT 2022. Contains 356231 sequences. (Running on oeis4.)