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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 0
2, 12, 366, 6150, 847594, 30312074, 10289785215, 609400419815, 392670408857828, 33926900616984192, 35986649547821568686 (list; graph; refs; listen; history; text; internal format)
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

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Last modified May 22 17:42 EDT 2022. Contains 353957 sequences. (Running on oeis4.)