A216081 Number of horizontal and antidiagonal neighbor colorings of the odd squares of an n X 5 array with new integer colors introduced in row major order.

1, 12, 136, 12840, 373780, 99827160, 5116799368, 2751754706832, 212339816996032, 194478305002268064, 20707051422399128416, 29191372156840204219200, 4055642578974004982217280, 8220961603626446873042001408

Offset

1,2

Comments

Column 5 of A216084.

Links

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

Example

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

Crossrefs

Cf. A216084.

Sequence in context: A189501 A373107 A351514 * A264503 A000467 A372733

Adjacent sequences: A216078 A216079 A216080 * A216082 A216083 A216084

Keyword

nonn

Author

R. H. Hardin, Sep 01 2012

Status

approved