A184066 Number of (n+1)X5 binary 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

34, 73, 382, 1918, 7671, 22452, 57488, 126978, 248290, 439534, 717161, 1096422, 1592731, 2221230, 2997249, 3936118, 5053167, 6363726, 7883125, 9626694, 11609763, 13847662, 16355721, 19149270, 22243639, 25654158, 29396157, 33484966

Offset

1,1

Comments

Column 4 of A184071

Links

R. H. Hardin, Table of n, a(n) for n = 1..200

Example

Some solutions for 3X5
..0..0..0..1..1....0..0..0..0..0....0..1..1..1..1....0..0..1..1..1
..0..1..1..1..1....0..1..1..1..1....1..0..0..1..1....0..1..0..1..1
..1..0..0..0..1....1..0..0..0..0....1..1..1..0..1....1..0..1..0..1
...
...1..2..3..4.......1..2..2..2.......2..2..3..4.......1..2..3..4...
...2..2..2..3.......2..2..2..2.......3..2..2..3.......2..2..2..3...

Crossrefs

Sequence in context: A063333 A079863 A154095 * A277449 A063533 A216432

Adjacent sequences: A184063 A184064 A184065 * A184067 A184068 A184069

Keyword

nonn

Author

R. H. Hardin Jan 09 2011

Status

approved