A250949 Number of (7+1)X(n+1) 0..2 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction

40357, 428095, 4106983, 36809498, 300230097, 2251710502, 15686582837, 102608620935, 635877024847, 3761814167894, 21377061188188, 117290921530356, 624016885183519, 3230699482590753, 16325650347436124, 80728866160658829

Offset

1,1

Comments

Row 7 of A250942

Links

R. H. Hardin, Table of n, a(n) for n = 1..158

Example

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

Crossrefs

Sequence in context: A255358 A229675 A250905 * A276567 A216291 A216290

Adjacent sequences: A250946 A250947 A250948 * A250950 A250951 A250952

Keyword

nonn

Author

R. H. Hardin, Nov 28 2014

Status

approved