A250638 Number of (6+1)X(n+1) 0..2 arrays with nondecreasing 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

7307, 53847, 381834, 2290189, 12291286, 60472234, 280151655, 1237636447, 5285753380, 21946694869, 89235599813, 356402744473, 1404452191513, 5470813048913, 21126872740673, 80977726517672, 308665836867714

Offset

1,1

Comments

Row 6 of A250632

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

R. H. Hardin, Empirical recurrence of order 57

Formula

Empirical recurrence of order 57 (see link above)

Example

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

Crossrefs

Sequence in context: A303876 A358855 A031799 * A206080 A253939 A116248

Adjacent sequences: A250635 A250636 A250637 * A250639 A250640 A250641

Keyword

nonn

Author

R. H. Hardin, Nov 26 2014

Status

approved