A187938 Number of (n+2)X9 binary arrays with every 2X2 subblock sum equal to some diagonal or antidiagonal neighbor 2X2 subblock sum

38020, 328116, 27734942, 1239704056, 75359054474

Offset

1,1

Comments

Column 7 of A187940

Links

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

Example

Some solutions for 4X9
..0..1..0..0..1..1..1..0..0....0..1..0..1..0..0..0..1..0
..0..1..1..1..1..0..0..1..0....0..1..0..0..1..1..1..0..0
..0..0..0..1..0..1..0..0..1....1..0..1..0..0..0..0..0..0
..1..1..0..1..0..0..1..0..0....1..0..1..0..1..1..0..0..1

Crossrefs

Sequence in context: A364309 A168628 A178286 * A235185 A172842 A068077

Adjacent sequences: A187935 A187936 A187937 * A187939 A187940 A187941

Keyword

nonn

Author

R. H. Hardin Mar 16 2011

Status

approved