A251001 Number of (7+1) X (n+1) 0..2 arrays with nondecreasing min(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.

120930, 1466191, 12238954, 86049801, 514669302, 2783159034, 13747683580, 63554260453, 277317915194, 1155900937722, 4631141670183, 17956854002984, 67682466852143, 249041501212468, 897394745093593, 3175730998873574

Offset

1,1

Comments

Row 7 of A250994.

Links

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

R. H. Hardin, Empirical recurrence of order 67

Formula

Empirical recurrence of order 67 (see link above).

Example

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

Crossrefs

Cf. A250994.

Sequence in context: A278005 A237336 A234340 * A061128 A228510 A237247

Adjacent sequences: A250998 A250999 A251000 * A251002 A251003 A251004

Keyword

nonn

Author

R. H. Hardin, Nov 29 2014

Status

approved