A265471 Number of 6Xn 0..6+n-2 arrays with upper left zero and lower right 6+n-2 and each element differing from its horizontal and antidiagonal neighbors by one or two.

1296, 34471, 8526762, 1509143496, 274085245804, 49094408347776, 9188739329021395, 1624899736795288912, 260045213960744141272, 39463502021937022362068, 6138613302691608422094776

Offset

1,1

Comments

Row 6 of A265466.

Links

R. H. Hardin, Table of n, a(n) for n = 1..23

Example

Some solutions for n=2
..0..1....0..2....0..1....0..1....0..2....0..1....0..1....0..2....0..1....0..2
..0..2....1..3....0..2....3..4....4..2....3..1....3..5....0..2....3..5....3..2
..4..6....2..3....0..1....5..4....3..5....3..4....4..6....4..5....4..2....0..2
..4..3....4..3....3..2....2..3....4..5....3..2....4..6....3..4....0..2....3..5
..1..3....5..3....0..2....5..6....4..3....3..2....5..6....2..3....1..3....6..5
..4..6....5..6....4..6....4..6....5..6....4..6....4..6....5..6....5..6....4..6

Crossrefs

Cf. A265466.

Sequence in context: A203820 A017056 A223596 * A017140 A152071 A223437

Adjacent sequences: A265468 A265469 A265470 * A265472 A265473 A265474

Keyword

nonn

Author

R. H. Hardin, Dec 09 2015

Status

approved