A265470 Number of 5Xn 0..5+n-2 arrays with upper left zero and lower right 5+n-2 and each element differing from its horizontal and antidiagonal neighbors by one or two.

125, 2764, 290140, 22533687, 2002867877, 176223025171, 14031585901207, 982335169173608, 67632927650356131, 4930666504007626924, 359381248044546056906, 24470589601229482555646, 1578712921429768156705587

Offset

1,1

Comments

Row 5 of A265466.

Links

R. H. Hardin, Table of n, a(n) for n = 1..61

Example

Some solutions for n=2
..0..2....0..1....0..1....0..1....0..1....0..2....0..1....0..2....0..2....0..2
..1..2....2..1....2..3....2..4....0..2....3..5....0..2....4..3....0..1....4..3
..4..5....3..2....4..5....2..4....3..4....3..2....0..2....1..3....2..3....2..1
..4..2....1..2....3..5....2..1....3..2....0..2....4..2....4..3....5..3....2..3
..3..5....3..5....4..5....3..5....3..5....4..5....4..5....4..5....4..5....4..5

Crossrefs

Cf. A265466.

Sequence in context: A017127 A119633 A017223 * A017331 A264139 A030690

Adjacent sequences: A265467 A265468 A265469 * A265471 A265472 A265473

Keyword

nonn

Author

R. H. Hardin, Dec 09 2015

Status

approved