A186834 Number of (n+2)X5 binary arrays with 3X3 subblock sums nondecreasing rightwards and downwards.

14112, 147428, 1537476, 15478835, 111211414, 798816802, 5699887192, 32614678623, 186554693948, 1065318863852, 5237351544896, 25736501670853, 126375975163794, 558574172464123, 2467874141143136, 10897815394363554

Offset

1,1

Comments

Column 3 of A186840

Links

R. H. Hardin, Table of n, a(n) for n = 1..169

Example

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

Crossrefs

Sequence in context: A066698 A035918 A157786 * A263911 A215019 A206845

Adjacent sequences: A186831 A186832 A186833 * A186835 A186836 A186837

Keyword

nonn

Author

R. H. Hardin, Feb 27 2011

Status

approved