A184079 Number of (n+1)X8 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

2968, 11128, 422992, 18149260, 1001709070, 53028481224

Offset

1,1

Comments

Column 7 of A184081

Links

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

Example

Some solutions for 3X8
..0..0..0..0..0..0..0..2....0..0..0..0..0..0..0..2....0..1..1..1..1..1..1..1
..0..0..1..1..1..1..1..0....0..0..0..1..1..2..2..0....1..0..0..0..0..1..1..2
..0..1..0..0..0..0..0..2....0..0..1..0..1..0..1..1....1..1..1..1..1..0..1..0
...
...0..1..2..2..2..2..3.......0..0..1..2..3..4..4.......2..2..2..2..3..4..5...
...1..2..2..2..2..2..3.......0..1..2..3..4..5..4.......3..2..2..2..2..3..4...

Crossrefs

Sequence in context: A179138 A236005 A107534 * A236590 A255790 A252947

Adjacent sequences: A184076 A184077 A184078 * A184080 A184081 A184082

Keyword

nonn

Author

R. H. Hardin Jan 09 2011

Status

approved