A184080 Number of (n+1)X9 0..2 arrays with rows and columns in nondecreasing order and with no 2X2 subblock sum differing from a horizontal or vertical neighbor subblock sum by more than one

5645, 28248, 1588555, 114306440, 11365443208, 1151733506397

Offset

1,1

Comments

Column 8 of A184081

Links

Table of n, a(n) for n=1..6.

Example

Some solutions for 3X9
..0..0..0..1..1..1..1..1..1....0..0..0..0..1..1..2..2..2
..0..1..1..0..1..1..1..1..2....0..1..1..1..1..1..0..1..1
..1..0..0..2..0..1..1..1..0....1..0..0..1..1..2..2..2..2
...
...1..2..2..3..4..4..4..5.......1..2..2..3..4..4..5..6...
...2..2..3..3..3..4..4..4.......2..2..3..4..5..5..5..6...

Crossrefs

Sequence in context: A339961 A332738 A359055 * A234401 A203726 A262660

Adjacent sequences: A184077 A184078 A184079 * A184081 A184082 A184083

Keyword

nonn

Author

R. H. Hardin Jan 09 2011

Status

approved