A187317 T(n,k)=Half the number of (n+2)X(k+2) binary arrays with each 3X3 subblock having sum 3, 4, 5 or 6

210, 1472, 1472, 10262, 18792, 10262, 71836, 237650, 237650, 71836, 502545, 3029032, 5422402, 3029032, 502545, 3516295, 38586679, 125103786, 125103786, 38586679, 3516295, 24602854, 491649803, 2885253967, 5243407780, 2885253967

Offset

1,1

Comments

Table starts

........210...........1472.............10262................71836

.......1472..........18792............237650..............3029032

......10262.........237650...........5422402............125103786

......71836........3029032.........125103786...........5243407780

.....502545.......38586679........2885253967.........219684364642

....3516295......491649803.......66555378453........9206325629324

...24602854.....6264576384.....1535446610156......385878307185440

..172142801....79823385565....35423389400148....16174152113717987

.1204456419..1017110076243...817231843461740...677941845846382141

.8427400133.12960036515411.18853921505477183.28416164592526303012

Links

R. H. Hardin, Table of n, a(n) for n = 1..97

Example

Some solutions for 5X4 with a(1,1)=0
..0..0..1..1....0..0..1..0....0..0..0..1....0..0..1..0....0..0..1..0
..1..0..1..0....1..1..0..1....1..1..0..1....0..1..0..0....1..0..0..1
..0..0..1..0....1..1..1..0....1..1..0..0....1..1..1..0....1..0..0..1
..1..0..1..1....0..0..1..1....0..1..0..1....0..1..1..1....1..0..1..1
..1..0..1..1....1..0..0..1....1..0..1..0....1..0..0..1....0..1..0..1

Crossrefs

Sequence in context: A118281 A328762 A047633 * A187309 A104902 A371111

Adjacent sequences: A187314 A187315 A187316 * A187318 A187319 A187320

Keyword

nonn,tabl

Author

R. H. Hardin Mar 08 2011

Status

approved