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A264641 Number of nX2 arrays of permutations of 0..n*2-1 with rows nondecreasing modulo 3 and columns nondecreasing modulo 4. 0

%I

%S 1,1,6,30,284,2344,31632,492432,12098624,236007424,6065647616,

%T 159458086912,6086725226496,260007588237312

%N Number of nX2 arrays of permutations of 0..n*2-1 with rows nondecreasing modulo 3 and columns nondecreasing modulo 4.

%C Column 2 of A264643.

%e Some solutions for n=4

%e ..1..4....4..1....0..5....0..5....0..1....0..4....0..1....0..4....4..1....4..5

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

%e ..2..5....7..2....3..6....1..7....3..6....6..1....7..2....7..2....5..2....1..7

%e ..3..7....3..6....7..2....6..3....7..2....3..7....3..6....3..6....3..7....6..3

%Y Cf. A264643.

%K nonn

%O 1,3

%A _R. H. Hardin_, Nov 19 2015

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Last modified January 19 18:34 EST 2022. Contains 350466 sequences. (Running on oeis4.)