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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

(list; graph; refs; listen; history; text; internal format)

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