A203325 Number of nX3 0..2 arrays with the row and column sums nondecreasing

10, 133, 1510, 15300, 143690, 1274165, 10806894, 88697732, 709273098, 5552897908, 42748316864, 324552075694, 2435445384919, 18099810023959, 133416870552426, 976549356613913, 7105388880850306, 51434017293354295, 370659513901413881

Offset

1,1

Comments

Column 3 of A203330

Links

R. H. Hardin, Table of n, a(n) for n = 1..73

Example

Some solutions for n=5
..0..1..2....2..1..0....2..0..1....2..1..2....0..0..2....2..0..0....1..1..2
..0..1..2....2..1..2....0..2..2....2..1..2....1..2..0....0..1..2....0..2..2
..2..0..2....1..2..2....1..1..2....1..2..2....1..2..0....1..0..2....2..1..1
..2..2..1....1..2..2....2..1..2....1..2..2....2..0..2....2..2..0....1..2..2
..2..2..2....1..2..2....1..2..2....2..2..1....2..2..2....0..2..2....1..2..2

Crossrefs

Sequence in context: A264279 A296637 A223407 * A324421 A284162 A066156

Adjacent sequences: A203322 A203323 A203324 * A203326 A203327 A203328

Keyword

nonn

Author

R. H. Hardin Dec 31 2011

Status

approved