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A203561 Number of nX5 0..2 arrays with row sums equal and column sums equal 1
3, 53, 993, 32613, 2577513, 39612503, 1509893003, 59794281893, 2435292751413, 165459828692703, 4307041366439903, 185658731463324903, 8107975032968711943, 358060848206529563813, 21242986806159652173693, 717973394997481520889893 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A203564

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..19

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Sequence in context: A001279 A092447 A167217 * A333563 A273802 A216931

Adjacent sequences:  A203558 A203559 A203560 * A203562 A203563 A203564

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 03 2012

STATUS

approved

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Last modified August 5 18:00 EDT 2021. Contains 346488 sequences. (Running on oeis4.)