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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
2
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
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
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Mar 08 2011
STATUS
approved