A204306 Number of (n+1)X5 0..3 arrays with the sums of 2X2 subblocks nondecreasing rightwards and downwards

162000, 15057392, 1271789125, 59151473070, 2692305415538, 78592862286558, 2280158782254760, 47375179742331854, 981488838289977946, 15710084391826908480, 250882297840940220789, 3265738290778768165918

Offset

1,1

Comments

Column 4 of A204309

Links

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

Example

Some solutions for n=4
..2..1..1..0..2....0..2..3..0..1....1..1..3..2..0....1..0..2..2..0
..1..0..2..1..2....1..1..1..3..3....1..0..0..1..3....1..3..0..3..3
..2..1..1..3..1....1..2..3..3..2....2..2..3..2..3....2..3..3..3..0
..0..1..1..2..1....1..1..2..3..3....1..3..1..3..3....1..3..0..3..3
..1..2..1..3..1....3..2..3..3..2....3..3..3..3..3....2..3..3..3..3

Crossrefs

Sequence in context: A349774 A184474 A114669 * A120409 A253466 A225811

Adjacent sequences: A204303 A204304 A204305 * A204307 A204308 A204309

Keyword

nonn

Author

R. H. Hardin Jan 14 2012

Status

approved