A187283 T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with every 2X2 subblock sum equal to some diagonal or antidiagonal neighbor 2X2 subblock sum

711, 859, 859, 20529, 5385, 20529, 79499, 71745, 71745, 79499, 868277, 704041, 3995709, 704041, 868277, 5031413, 8256093, 67503191, 67503191, 8256093, 5031413, 43307435, 90158141, 1974830613

Offset

1,1

Comments

Table starts

.....711.....859....20529....79499.....868277..5031413.43307435

.....859....5385....71745...704041....8256093.90158141

...20529...71745..3995709.67503191.1974830613

...79499..704041.67503191

..868277.8256093

.5031413

Links

Table of n, a(n) for n=1..24.

Example

Some solutions for 5X4
..1..1..2..0....1..2..1..2....0..1..0..2....1..1..1..1....2..1..0..2
..2..1..2..1....0..2..1..1....0..1..0..0....2..1..2..1....0..0..1..0
..2..1..1..2....2..2..0..2....1..1..0..2....2..1..1..1....0..2..0..1
..1..2..1..1....0..1..1..1....0..1..1..0....1..2..2..2....1..2..0..2
..0..2..1..2....2..1..1..1....1..1..0..2....1..2..0..2....0..1..2..0

Crossrefs

Sequence in context: A232836 A220593 A252965 * A187280 A265197 A269060

Adjacent sequences: A187280 A187281 A187282 * A187284 A187285 A187286

Keyword

nonn,tabl

Author

R. H. Hardin Mar 07 2011

Status

approved