A237548 T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with the (lower) median of each row and column nondecreasing

3470, 53831, 53831, 845952, 3203193, 845952, 11887072, 143951490, 143951490, 11887072, 179403984, 7420279118, 30191128785, 7420279118, 179403984, 2431745813, 324957818406, 4507667952676, 4507667952676, 324957818406

Offset

1,1

Comments

Table starts

.......3470........53831........845952......11887072.......179403984

......53831......3203193.....143951490....7420279118....324957818406

.....845952....143951490...30191128785.4507667952676.915350182586052

...11887072...7420279118.4507667952676

..179403984.324957818406

.2431745813

Links

R. H. Hardin, Table of n, a(n) for n = 1..24

Example

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

Crossrefs

Sequence in context: A031357 A144800 A108250 * A237546 A253365 A109484

Adjacent sequences: A237545 A237546 A237547 * A237549 A237550 A237551

Keyword

nonn,tabl

Author

R. H. Hardin, Feb 09 2014

Status

approved