A216337 Number of horizontal and antidiagonal neighbor colorings of the even squares of an nX7 array with new integer colors introduced in row major order

5, 136, 61915, 12297870, 33093354906, 18383343930862, 148049849072167133, 166176901557427161788, 2985013124775648539788601, 5737167226254078112766902750, 194564626464285317322710261641286

Offset

1,1

Comments

Column 7 of A216338

Links

R. H. Hardin, Table of n, a(n) for n = 1..17

Example

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

Crossrefs

Sequence in context: A320995 A061453 A215958 * A142294 A279307 A265875

Adjacent sequences: A216334 A216335 A216336 * A216338 A216339 A216340

Keyword

nonn

Author

R. H. Hardin Sep 04 2012

Status

approved