A186125 Number of (n+1)X7 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.

182, 1878, 10502, 79782, 539962, 4056794, 29491822, 220010616, 1637583596, 12272724126, 92041463782, 692502277290, 5211824476838, 39292304082970, 296277012735686, 2235990214584584, 16877344601227160, 127445629177320202

Offset

1,1

Comments

Column 6 of A186128

Links

R. H. Hardin, Table of n, a(n) for n = 1..200

Example

Some solutions for 3X7
..1..0..1..0..1..1..1....0..1..0..0..1..0..0....1..0..0..1..1..0..0
..1..1..1..1..1..0..0....1..1..1..0..0..0..0....1..0..0..0..0..0..1
..0..1..0..1..1..0..0....1..0..1..0..0..1..1....0..0..1..0..0..0..1

Crossrefs

Sequence in context: A154067 A234982 A234975 * A209852 A321637 A023904

Adjacent sequences: A186122 A186123 A186124 * A186126 A186127 A186128

Keyword

nonn

Author

R. H. Hardin, Feb 13 2011

Status

approved