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A264560 T(n,k)=Number of nXk arrays of permutations of 0..n*k-1 with rows nondecreasing modulo 2 and columns nondecreasing modulo 3. 5

%I #3 Nov 17 2015 18:05:19

%S 1,1,1,2,3,1,4,24,15,2,12,316,888,156,4,36,6080,84672,58368,2032,8,

%T 144,149824,17444160,66194496,7019136,30912,24,576,5728896,5356808640

%N T(n,k)=Number of nXk arrays of permutations of 0..n*k-1 with rows nondecreasing modulo 2 and columns nondecreasing modulo 3.

%C Table starts

%C ..1.....1.......2........4.......12.........36.....144.576

%C ..1.....3......24......316.....6080.....149824.5728896

%C ..1....15.....888....84672.17444160.5356808640

%C ..2...156...58368.66194496

%C ..4..2032.7019136

%C ..8.30912

%C .24

%e Some solutions for n=3 k=4

%e ..4..6..1..9....6..4..9..3....0.11..9..1....0..9..1..3....6..4.10..0

%e .11..3..7..5....8.10..0..7....6..5..3..7....6..8..4..7....9..1..7..3

%e ..2..0.10..8....2..1..5.11....4..8..2.10...10..2.11..5....8..2.11..5

%Y Row 1 is A111942(n+1).

%K nonn,tabl

%O 1,4

%A _R. H. Hardin_, Nov 17 2015

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Last modified April 19 18:05 EDT 2024. Contains 371798 sequences. (Running on oeis4.)