A237547 Number of (n+2)X(2+2) 0..2 arrays with the (lower) median of each row and column nondecreasing

53831, 3203193, 143951490, 7420279118, 324957818406, 15484808708276, 656747157332801, 29785900081044579, 1232372701860212385, 54052558221474470187

Offset

1,1

Comments

Column 2 of A237548

Links

Table of n, a(n) for n=1..10.

Example

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

Crossrefs

Sequence in context: A251369 A252035 A099231 * A100422 A099010 A164723

Adjacent sequences: A237544 A237545 A237546 * A237548 A237549 A237550

Keyword

nonn

Author

R. H. Hardin, Feb 09 2014

Status

approved