A216458 Number of horizontal, diagonal and antidiagonal neighbor colorings of the even squares of an nX5 array with new integer colors introduced in row major order

2, 5, 203, 3429, 580479, 20880505, 8195008751, 484968748793, 348950573407587, 30012936243058237, 34789578208577116867, 4040674235335081456861, 6947043903258606579346103, 1037627124289198371293601937

Offset

1,1

Comments

Column 5 of A216460

Links

R. H. Hardin, Table of n, a(n) for n = 1..24

Example

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

Crossrefs

Sequence in context: A006271 A013105 A208210 * A027682 A096695 A084297

Adjacent sequences: A216455 A216456 A216457 * A216459 A216460 A216461

Keyword

nonn

Author

R. H. Hardin Sep 07 2012

Status

approved