A187356 T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 2X2 subblock sum equal to some diagonal or antidiagonal neighbor 2X2 subblock sum

5056, 7776, 7776, 440192, 89150, 440192, 2332924, 2103856, 2103856, 2332924, 52776112, 39189180, 393309192, 39189180, 52776112, 460096436, 823266330

Offset

1,1

Comments

Table starts

.....5056.....7776....440192..2332924..52776112.460096436

.....7776....89150...2103856.39189180.823266330

...440192..2103856.393309192

..2332924.39189180

.52776112

Links

Table of n, a(n) for n=1..17.

Example

Some solutions for 5X4
..0..0..2..0....0..2..0..2....2..0..2..0....0..2..0..1....2..2..0..2
..2..3..1..2....0..3..1..2....0..2..0..2....0..2..1..2....2..1..3..2
..1..0..1..2....2..0..1..2....1..1..1..0....2..0..1..1....0..3..0..1
..2..2..3..0....2..2..2..1....0..1..0..2....0..2..1..1....2..2..0..3
..1..1..0..3....0..1..1..1....0..2..0..1....2..0..1..1....0..1..1..1

Crossrefs

Sequence in context: A229857 A155145 A281679 * A187354 A160757 A046169

Adjacent sequences: A187353 A187354 A187355 * A187357 A187358 A187359

Keyword

nonn,tabl

Author

R. H. Hardin Mar 08 2011

Status

approved