A186792 Half the number of (n+2)X7 binary arrays with each 3X3 subblock having a sum in 2..7

893145, 101532811, 11506373601, 1304974153960, 147985903265501, 16782289067411968, 1903184045712789082, 215829354195761109113, 24475987389818757238854, 2775683466530909270842129

Offset

1,1

Comments

Column 5 of A186796

Links

R. H. Hardin, Table of n, a(n) for n = 1..115

Example

Some solutions for 4X7 with a(1,1)=0
..0..0..0..1..0..1..0....0..0..0..0..1..1..1....0..0..0..1..0..1..0
..0..0..1..1..1..1..1....0..0..1..1..1..0..0....0..0..1..0..1..0..0
..0..0..1..0..0..0..1....0..0..1..0..1..0..1....0..0..1..1..0..1..1
..0..0..0..0..0..0..0....0..0..1..0..0..1..1....0..0..1..0..1..0..0

Crossrefs

Sequence in context: A269219 A224594 A105379 * A345607 A346281 A032429

Adjacent sequences: A186789 A186790 A186791 * A186793 A186794 A186795

Keyword

nonn

Author

R. H. Hardin Feb 26 2011

Status

approved