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A264690 Number of nX2 arrays of permutations of 0..n*2-1 with rows nondecreasing modulo 3 and columns nondecreasing modulo 5. 0

%I #4 Nov 21 2015 07:29:53

%S 1,1,6,23,84,897,9292,98776,1380544,20573376,451512320,8653964800,

%T 238280574976,6409517629440,172949221113856

%N Number of nX2 arrays of permutations of 0..n*2-1 with rows nondecreasing modulo 3 and columns nondecreasing modulo 5.

%C Column 2 of A264692.

%e Some solutions for n=6

%e ..0..5....0..5....5.11....0..5....0..1....0..1....0..5....6.10...10..1....0..5

%e .10.11....1.10...10..7....6.10....5.11....5.11....6.10....1..5....5.11....6.10

%e ..6..2....8.11....0..2....7..1...10..2...10..2....1.11....3..0....0..6....1.11

%e ..1..7....3..6....1..8....2.11....6..7....6..7....3..7....8.11....8..2....7..2

%e ..3..8....4..7....6..3....4..8....9..3....3..8....8..2....9..7....4..7....4..8

%e ..9..4....9..2....9..4....9..3....4..8....9..4....9..4....4..2....9..3....9..3

%Y Cf. A264692.

%K nonn

%O 1,3

%A _R. H. Hardin_, Nov 21 2015

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Last modified April 22 10:51 EDT 2024. Contains 371897 sequences. (Running on oeis4.)