A187315 Half the number of (n+2)X9 binary arrays with each 3X3 subblock having sum 3, 4, 5 or 6

24602854, 6264576384, 1535446610156, 385878307185440, 96936541525346279, 24360553147588517588, 6123962812371625570408

Offset

1,1

Comments

Column 7 of A187317

Links

Table of n, a(n) for n=1..7.

Example

Some solutions for 4X9 with a(1,1)=0
..0..0..1..0..0..1..0..0..1....0..0..1..0..0..1..1..0..1
..0..0..1..0..0..1..1..0..0....0..0..1..0..0..1..0..0..0
..0..0..1..0..1..1..1..0..1....0..0..1..0..1..0..1..1..0
..0..0..1..0..0..0..1..1..1....0..0..1..0..1..0..1..0..1

Crossrefs

Sequence in context: A183791 A115533 A256013 * A083636 A124069 A257383

Adjacent sequences: A187312 A187313 A187314 * A187316 A187317 A187318

Keyword

nonn

Author

R. H. Hardin Mar 08 2011

Status

approved