A250574 T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with nondecreasing maximum of every three consecutive values in every row and column.

512, 3375, 3375, 21952, 39852, 21952, 140608, 463006, 463006, 140608, 884736, 5281190, 9583440, 5281190, 884736, 5545233, 59025322, 194160522, 194160522, 59025322, 5545233, 34645976, 656805747, 3844025984, 6967413024, 3844025984

Offset: 1

Author

R. H. Hardin, Nov 25 2014

Keywords

• nonn
• tabl

Comments

Table starts

.......512........3375..........21952............140608..............884736

......3375.......39852.........463006...........5281190............59025322

.....21952......463006........9583440.........194160522..........3844025984

....140608.....5281190......194160522........6967413024........243722971680

....884736....59025322.....3844025984......243722971680......15037777879872

...5545233...656805747....75733658665.....8480014708481.....922491768788283

..34645976..7283102949..1486288137310...293803461491618...56336934011827612

.216000000.80572967431.29093999130722.10151010566609616.3430565103477146672

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..126

Crossrefs

Column 1 is A189155(n+2)

Formula

Empirical for column k:

k=1: [linear recurrence of order 19]

k=2: [order 49]