A186127 Number of (n+1)X9 binary arrays with every 2X2 subblock diagonal sum less antidiagonal sum equal to some horizontal or vertical neighbor 2X2 subblock diagonal sum less antidiagonal sum

678, 14606, 120290, 1574348, 17129792, 220010616, 2630528360, 33067061342, 411149162658, 5153688541776, 64828282889916, 815418585280038, 10288257115910818, 129785918260715398, 1639362506927114546

Offset

1,1

Comments

Column 8 of A186128

Links

R. H. Hardin, Table of n, a(n) for n = 1..20

Example

Some solutions for 3X9
..1..1..0..0..1..0..0..1..1....1..1..0..1..1..0..0..1..1
..1..1..1..0..0..0..1..1..1....0..0..0..1..1..1..0..0..0
..0..0..1..0..0..1..1..0..0....0..0..1..1..0..1..1..0..0

Crossrefs

Sequence in context: A251836 A251830 A250872 * A097771 A121105 A046514

Adjacent sequences: A186124 A186125 A186126 * A186128 A186129 A186130

Keyword

nonn

Author

R. H. Hardin Feb 13 2011

Status

approved