A208586 Number of 6Xn 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

203, 3319375, 493060277544, 314946169382603268, 596705277048973363385024

Offset

1,1

Comments

Row 6 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..0..0..0....0..0..0..0....0..0..0..0
..1..1..1..0....1..1..1..0....1..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..0
..0..1..0..1....1..0..1..2....1..0..1..0....1..0..1..0....1..0..1..0
..0..1..0..0....3..0..0..0....0..1..0..1....0..1..0..1....0..1..0..1
..0..1..1..0....0..1..1..0....0..1..0..2....0..1..2..0....0..1..0..0

Crossrefs

Sequence in context: A319783 A208306 A208786 * A208465 A208471 A348823

Adjacent sequences: A208583 A208584 A208585 * A208587 A208588 A208589

Keyword

nonn

Author

R. H. Hardin Feb 29 2012

Status

approved