A208585 Number of 5 X n nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to more than one of its immediate leftward or upward or right-upward antidiagonal neighbors.

52, 90863, 992352688, 36182978136598, 3233126493451564482

Offset

1,1

Comments

Row 5 of A208581.

Links

Table of n, a(n) for n=1..5.

Example

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

Crossrefs

Cf. A208581.

Sequence in context: A263223 A198525 A208580 * A208464 A211252 A208470

Adjacent sequences: A208582 A208583 A208584 * A208586 A208587 A208588

Keyword

nonn

Author

R. H. Hardin Feb 29 2012

Status

approved