A201450 Number of n X 7 0..3 arrays with every row and column nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.

4, 110, 844, 1720, 45532, 363693, 1129682, 1136762, 16354832, 80822317, 164740812, 118019739, 1269643884, 4872612379, 7910355612, 4617454222, 41308142036, 133824389250, 186755344178, 94854691897, 750329582592, 2169912953058

Offset

1,1

Links

R. H. Hardin, Table of n, a(n) for n = 1..32

Example

Some solutions for n=5:
..0..0..0..0..1..1..1....0..0..0..1..1..1..2....0..0..0..0..0..1..2
..0..0..1..1..1..1..3....0..0..1..1..1..1..3....0..0..1..1..1..2..2
..0..0..1..1..2..2..3....0..1..1..2..2..2..3....0..1..1..1..2..2..3
..0..2..2..2..3..3..3....0..2..2..2..2..2..3....0..1..1..2..2..2..3
..2..2..2..2..3..3..3....0..3..3..3..3..3..3....3..3..3..3..3..3..3

Crossrefs

Column 7 of A201451.

Sequence in context: A015100 A061454 A346277 * A286424 A358806 A358779

Adjacent sequences: A201447 A201448 A201449 * A201451 A201452 A201453

Keyword

nonn

Author

R. H. Hardin, Dec 01 2011

Status

approved