A187937 Number of (n+2)X8 binary arrays with every 2X2 subblock sum equal to some diagonal or antidiagonal neighbor 2X2 subblock sum

10296, 64024, 3394156, 94215422, 3490809390

Offset

1,1

Comments

Column 6 of A187940

Links

Table of n, a(n) for n=1..5.

Example

Some solutions for 4X8
..1..1..1..1..0..1..0..0....0..1..0..1..0..1..1..1....0..0..0..0..1..1..1..0
..0..0..0..1..0..1..1..1....1..0..1..0..0..0..1..0....1..1..1..1..1..0..0..1
..1..1..1..1..1..0..0..1....0..1..0..0..1..1..1..1....0..0..0..1..0..1..1..0
..0..0..0..0..1..1..1..0....1..0..1..0..1..0..0..1....1..1..1..0..1..0..0..1

Crossrefs

Sequence in context: A257184 A254984 A241788 * A154089 A227410 A227411

Adjacent sequences: A187934 A187935 A187936 * A187938 A187939 A187940

Keyword

nonn

Author

R. H. Hardin Mar 16 2011

Status

approved