A215956 Number of horizontal, vertical and diagonal neighbor colorings of the even squares of an nX5 array with new integer colors introduced in row major order

2, 12, 366, 6150, 847594, 30312074, 10289785215, 609400419815, 392670408857828, 33926900616984192, 35986649547821568686

Offset

1,1

Comments

Column 5 of A215959

Links

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

Example

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

Crossrefs

Sequence in context: A152686 A131690 A158261 * A251182 A266241 A012547

Adjacent sequences: A215953 A215954 A215955 * A215957 A215958 A215959

Keyword

nonn

Author

R. H. Hardin Aug 28 2012

Status

approved