A201274 Number of n X 5 0..2 arrays with every row and column nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.

1, 3, 16, 21, 199, 556, 442, 2827, 5680, 3651, 19960, 35039, 19820, 96084, 151800, 78205, 354360, 525467, 255143, 1089594, 1531163, 707770, 2908481, 3937393, 1758805, 6976823, 9145189, 3964264, 15328243, 19618905, 8309214, 31406219, 39327693, 16320584, 60602426

Offset

0,2

Links

Alois P. Heinz, Table of n, a(n) for n = 0..200 (terms n = 1..141 from R. H. Hardin)

Example

Some solutions for n=6
..0..0..0..0..0....0..0..0..0..2....0..0..0..0..0....0..0..0..0..0
..0..1..1..1..1....0..0..0..1..2....0..0..0..0..0....0..1..1..1..2
..0..1..1..1..2....0..0..0..1..2....1..1..1..2..2....0..1..1..2..2
..0..1..2..2..2....1..1..1..1..2....1..1..1..2..2....0..1..1..2..2
..0..1..2..2..2....1..1..2..2..2....1..1..1..2..2....0..1..1..2..2
..0..1..2..2..2....1..1..2..2..2....1..2..2..2..2....0..1..2..2..2

Crossrefs

Column 5 of A201277.

Sequence in context: A346072 A218625 A028687 * A101132 A153723 A091273

Adjacent sequences: A201271 A201272 A201273 * A201275 A201276 A201277

Keyword

nonn

Author

R. H. Hardin, Nov 29 2011

Extensions

a(0)=1 prepended by Alois P. Heinz, Mar 18 2024

Status

approved