A216459 Number of horizontal, diagonal and antidiagonal neighbor colorings of the even squares of an nX7 array with new integer colors introduced in row major order

5, 52, 17733, 2711768, 6423148007, 3030359756694, 22530453266592757, 22413340656366875404, 380159173982235374080849, 663445132155786673512833428, 21523865504501144083392978709171

Offset

1,1

Comments

Column 7 of A216460

Links

Table of n, a(n) for n=1..11.

Example

Some solutions for n=4
..0..x..1..x..2..x..3....0..x..1..x..2..x..3....0..x..1..x..2..x..3
..x..2..x..3..x..0..x....x..2..x..0..x..4..x....x..2..x..0..x..4..x
..0..x..4..x..5..x..3....0..x..1..x..2..x..1....0..x..5..x..6..x..7
..x..5..x..0..x..2..x....x..5..x..4..x..6..x....x..4..x..1..x..0..x

Crossrefs

Sequence in context: A208303 A215902 A215846 * A107803 A255579 A088712

Adjacent sequences: A216456 A216457 A216458 * A216460 A216461 A216462

Keyword

nonn

Author

R. H. Hardin Sep 07 2012

Status

approved