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A183263 Number of nX(n+1) binary arrays with the number of 0-1 adjacencies equal to the number of 0-0 adjacencies 0
1, 5, 157, 23285, 12358457, 25285926227, 195553837386094, 5666836462620366801, 612046414343332775190624, 245492224601703787791221255118 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Superdiagonal 1 of A183262

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for 3X4

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

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

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

CROSSREFS

Sequence in context: A316738 A009082 A156134 * A155208 A321529 A156486

Adjacent sequences:  A183260 A183261 A183262 * A183264 A183265 A183266

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 03 2011

STATUS

approved

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Last modified December 9 00:32 EST 2019. Contains 329871 sequences. (Running on oeis4.)