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A265116 Number of nX4 arrays of permutations of 4 copies of 0..n-1 with row sums equal, column sums equal and full-length antidiagonal sums equal to the short dimension sums. 0

%I

%S 1,0,6,624,6592,126764,3493730

%N Number of nX4 arrays of permutations of 4 copies of 0..n-1 with row sums equal, column sums equal and full-length antidiagonal sums equal to the short dimension sums.

%C Column 4 of A265117.

%e Some solutions for n=5

%e ..1..1..4..2....1..4..1..2....2..4..0..2....2..0..2..4....1..4..3..0

%e ..0..4..0..4....4..1..3..0....2..3..3..0....1..4..1..2....0..3..3..2

%e ..3..3..0..2....0..0..4..4....0..1..3..4....3..2..3..0....2..1..1..4

%e ..3..1..2..2....3..2..2..1....2..1..1..4....1..0..4..3....4..2..2..0

%e ..3..1..4..0....2..3..0..3....4..1..3..0....3..4..0..1....3..0..1..4

%Y Cf. A265117.

%K nonn

%O 1,3

%A _R. H. Hardin_, Dec 01 2015

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Last modified August 14 06:54 EDT 2022. Contains 356110 sequences. (Running on oeis4.)