A187282 Number of (n+2)X5 0..2 arrays with every 2X2 subblock sum equal to some diagonal or antidiagonal neighbor 2X2 subblock sum

20529, 71745, 3995709, 67503191, 1974830613, 45488959473, 1183198206417, 29149975570365

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