A186791 Half the number of (n+2)X6 binary arrays with each 3X3 subblock having a sum in 2..7

115069, 6687805, 387763760, 22495797451, 1304974153960, 75702797880635, 4391582264258067, 254759386224257430, 14778806361675616311, 857331004466757829463, 49734493514935420081553, 2885139849983393846466620

Offset

1,1

Comments

Column 4 of A186796

Links

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

Example

Some solutions for 4X6 with a(1,1)=0
..0..0..0..1..0..0....0..0..1..0..0..1....0..0..1..0..0..1....0..0..0..1..0..0
..0..0..1..0..1..1....0..0..1..1..0..0....0..0..1..1..0..1....0..0..1..1..0..1
..0..1..1..0..0..0....0..0..1..1..0..1....0..0..1..0..1..1....0..1..1..0..0..1
..0..0..0..1..1..1....0..1..1..1..0..0....0..0..0..1..0..0....0..0..0..1..0..0

Crossrefs

Sequence in context: A254487 A253859 A237692 * A069245 A215995 A183649

Adjacent sequences: A186788 A186789 A186790 * A186792 A186793 A186794

Keyword

nonn

Author

R. H. Hardin Feb 26 2011

Status

approved