A200987 Number of nX5 0..4 arrays with every row and column nondecreasing rightwards and downwards, and the number of instances of each value within one of each other

1, 21, 140, 1095, 4919, 27000, 97341, 383172, 1188521, 3704820, 9947816, 27240277, 65292069, 157646021, 349738426, 770969390, 1585648871, 3256248216, 6303135880, 12177430692, 22459794938, 41128002746, 72582886199, 127586136583

Offset

1,2

Comments

Column 5 of A200990

Links

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

Example

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

Crossrefs

Sequence in context: A220151 A372751 A337899 * A107731 A003702 A221785

Adjacent sequences: A200984 A200985 A200986 * A200988 A200989 A200990

Keyword

nonn

Author

R. H. Hardin Nov 25 2011

Status

approved