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A187282 Number of (n+2)X5 0..2 arrays with every 2X2 subblock sum equal to some diagonal or antidiagonal neighbor 2X2 subblock sum 0
20529, 71745, 3995709, 67503191, 1974830613, 45488959473, 1183198206417, 29149975570365 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A187283

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for 4X5

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

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

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

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

CROSSREFS

Sequence in context: A253873 A253539 A178585 * A235836 A235831 A235587

Adjacent sequences:  A187279 A187280 A187281 * A187283 A187284 A187285

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 07 2011

STATUS

approved

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Last modified May 22 09:48 EDT 2022. Contains 353942 sequences. (Running on oeis4.)