A250446 Number of (n+1)X(n+1) 0..2 arrays with nondecreasing min(x(i,j),x(i,j-1)) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction

44, 2029, 258377, 104578590, 130213746897, 517127141610189, 6511299501417969432, 263339939500369268477592, 34148064516199884743133965168, 14262551337351857744499567104885353

Offset

1,1

Comments

Diagonal of A250454

Links

R. H. Hardin, Table of n, a(n) for n = 1..14

Example

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

Crossrefs

Sequence in context: A041925 A094506 A121008 * A233941 A329302 A359885

Adjacent sequences: A250443 A250444 A250445 * A250447 A250448 A250449

Keyword

nonn

Author

R. H. Hardin, Nov 23 2014

Status

approved