A250714 Number of (7+1)X(n+1) 0..3 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

480846, 11354082, 242456834, 3888150856, 50308117796, 550734848033, 5300798582250, 46142774467199, 371449841970920, 2807541564936234, 20180942387047925, 139143362446503271, 927456697203185953

Offset

1,1

Comments

Row 7 of A250707

Links

R. H. Hardin, Table of n, a(n) for n = 1..178

Example

Some solutions for n=1
..1..0....1..0....1..0....0..0....1..0....0..0....1..0....0..0....1..0....0..0
..0..1....0..2....0..1....0..0....0..1....0..1....0..1....0..2....0..1....0..0
..0..2....0..2....0..1....1..1....0..2....0..2....0..1....0..3....0..1....1..2
..0..2....1..2....1..1....1..2....1..1....0..2....1..1....1..2....1..0....2..2
..3..2....2..1....1..1....2..2....1..1....2..0....1..2....0..3....0..1....2..3
..2..3....1..2....2..2....1..3....2..1....0..3....2..2....0..3....2..1....3..2
..2..3....1..3....2..2....1..3....1..3....1..2....2..2....1..2....1..3....2..3
..2..3....3..1....1..3....1..3....1..3....2..3....2..3....1..2....3..3....3..2

Crossrefs

Sequence in context: A244086 A015332 A238178 * A203503 A172674 A184495

Adjacent sequences: A250711 A250712 A250713 * A250715 A250716 A250717

Keyword

nonn

Author

R. H. Hardin, Nov 26 2014

Status

approved