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A229868 Number of n X n 0..4 arrays with corresponding row and column sums equal 0
5, 125, 40625, 266515625, 36821326171875, 110831249753697265625 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A229870

LINKS

Table of n, a(n) for n=1..6.

EXAMPLE

Some solutions for n=4

..0..0..0..1....0..0..1..1....0..0..1..0....0..0..1..0....0..0..1..0

..0..0..2..1....0..0..2..1....0..0..1..2....0..0..2..0....0..0..4..1

..1..2..4..0....2..2..3..2....1..0..2..4....0..2..2..4....1..4..0..0

..0..1..1..0....0..1..3..0....0..3..3..4....1..0..3..2....0..1..0..0

CROSSREFS

Sequence in context: A202628 A109345 A194502 * A201839 A234609 A278080

Adjacent sequences:  A229865 A229866 A229867 * A229869 A229870 A229871

KEYWORD

nonn

AUTHOR

R. H. Hardin, Oct 01 2013

STATUS

approved

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Last modified September 26 19:57 EDT 2021. Contains 347672 sequences. (Running on oeis4.)