A250683 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 absolute value of x(i,j)-x(i-1,j) in the j direction

1005121, 32230991, 923242475, 23739860017, 542694735983, 11161659240791, 210335029800118, 3682042848693451, 60641209583699449, 948745856029597670, 14215547255379464689, 205309451238359552540, 2873492420605039758875

Offset

1,1

Comments

Row 7 of A250676

Links

R. H. Hardin, Table of n, a(n) for n = 1..17

Example

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

Crossrefs

Sequence in context: A245210 A357098 A250698 * A065326 A213904 A059925

Adjacent sequences: A250680 A250681 A250682 * A250684 A250685 A250686

Keyword

nonn

Author

R. H. Hardin, Nov 26 2014

Status

approved