A187936 Number of (n+2)X7 binary arrays with every 2X2 subblock sum equal to some diagonal or antidiagonal neighbor 2X2 subblock sum

3188, 14308, 435194, 7443374, 167909728, 3490809390, 75359054474, 1600390024874, 34388021244382, 736688645134204, 15821989912283976, 339477706692286110

Offset

1,1

Comments

Column 5 of A187940

Links

Table of n, a(n) for n=1..12.

Example

Some solutions for 4X7
..0..0..0..1..1..0..1....1..1..1..0..1..1..0....1..0..1..0..0..0..0
..0..1..0..1..0..1..1....0..1..0..1..0..1..0....0..1..1..1..1..1..1
..0..0..0..0..1..1..1....1..1..1..1..0..1..1....0..0..0..1..0..0..0
..1..0..1..1..1..1..0....0..1..0..0..1..0..0....1..1..0..1..1..1..1

Crossrefs

Sequence in context: A205282 A324634 A115932 * A252367 A345589 A345847

Adjacent sequences: A187933 A187934 A187935 * A187937 A187938 A187939

Keyword

nonn

Author

R. H. Hardin Mar 16 2011

Status

approved