A216335 Number of horizontal and antidiagonal neighbor colorings of the even squares of an n X 5 array with new integer colors introduced in row major order.

2, 12, 602, 12840, 2387180, 99827160, 41521045376, 2751754706832, 2063225889204272, 194478305002268064, 232628053298868289568, 29191372156840204219200, 51464654047934299798487552

Offset

1,1

Comments

Column 5 of A216338.

Links

R. H. Hardin, Table of n, a(n) for n = 1..49

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..0
..x..3..x..4..x....x..3..x..1..x....x..3..x..0..x....x..2..x..3..x
..1..x..5..x..3....2..x..0..x..3....1..x..4..x..5....4..x..1..x..0
..x..4..x..0..x....x..2..x..0..x....x..6..x..7..x....x..0..x..4..x

Crossrefs

Cf. A216338.

Sequence in context: A002860 A108078 A052129 * A173104 A141770 A363098

Adjacent sequences: A216332 A216333 A216334 * A216336 A216337 A216338

Keyword

nonn

Author

R. H. Hardin, Sep 04 2012

Status

approved