A208786 Number of n X 6 nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to any antidiagonal neighbor (colorings ignoring permutations of colors).

203, 1788850, 193010377345, 96847533172181917, 151244023549144862428002, 584640904301741699504623887947, 4816230734184037369523912393674851309, 76044892493064011078851904329265333088930722

Offset

1,1

Comments

Column 6 of A208788.

Links

Table of n, a(n) for n=1..8.

Example

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

Crossrefs

Cf. A208788.

Sequence in context: A145635 A319783 A208306 * A208586 A208465 A208471

Adjacent sequences: A208783 A208784 A208785 * A208787 A208788 A208789

Keyword

nonn

Author

R. H. Hardin, Mar 01 2012

Status

approved