A204226 Number of (n+1)X5 0..2 arrays with the sums of 2X2 subblocks nondecreasing rightwards and downwards

11100, 312001, 8183170, 129062037, 2019310610, 21958547501, 239090847020, 1998393334223, 16732354210738, 114864924928762, 789227515822757, 4651328406696920, 27416959362534398, 143142975020535966

Offset

1,1

Comments

Column 4 of A204230

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=4
..2..1..1..1..2....0..0..2..1..1....2..1..1..1..2....1..2..0..1..1
..0..2..1..2..1....2..0..0..1..2....0..2..2..2..1....0..1..2..2..2
..2..1..1..1..2....0..0..2..2..0....1..2..1..2..2....1..2..0..1..2
..1..1..2..1..2....0..2..0..2..2....1..2..2..2..1....1..1..2..2..2
..1..2..0..2..1....2..2..2..2..2....2..2..1..2..2....2..1..1..1..2

Crossrefs

Sequence in context: A300562 A253378 A253371 * A235440 A235405 A360034

Adjacent sequences: A204223 A204224 A204225 * A204227 A204228 A204229

Keyword

nonn

Author

R. H. Hardin Jan 13 2012

Status

approved