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A202783 Number of n X n 0..7 arrays with row and column sums equal 0
8, 64, 10088, 82112704, 32701809796548 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A202784

LINKS

Table of n, a(n) for n=1..5.

EXAMPLE

Some solutions for n=3

..5..6..2....6..7..4....6..0..4....5..2..1....3..2..5....2..1..5....4..7..5

..3..4..6....6..4..7....0..4..6....3..4..1....4..1..5....5..2..1....7..2..7

..5..3..5....5..6..6....4..6..0....0..2..6....3..7..0....1..5..2....5..7..4

CROSSREFS

Sequence in context: A132545 A034376 A067215 * A307436 A067685 A304306

Adjacent sequences:  A202780 A202781 A202782 * A202784 A202785 A202786

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 24 2011

STATUS

approved

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Last modified August 19 20:20 EDT 2019. Contains 326133 sequences. (Running on oeis4.)