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A216341 Number of horizontal and antidiagonal neighbor colorings of the even squares of a 5Xn array with new integer colors introduced in row major order 0
5, 27, 877, 15144, 2387180, 87852160, 33093354906, 2004646634218, 1404640885994156, 123560104158582188, 140585911310274456089 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 5 of A216338

LINKS

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

EXAMPLE

Some solutions for n=4

..0..x..1..x....0..x..1..x....0..x..1..x....0..x..1..x....0..x..1..x

..x..2..x..3....x..2..x..3....x..2..x..3....x..2..x..0....x..2..x..3

..3..x..4..x....1..x..4..x....1..x..4..x....1..x..3..x....4..x..1..x

..x..3..x..1....x..1..x..0....x..5..x..3....x..0..x..1....x..5..x..2

..4..x..2..x....2..x..1..x....4..x..2..x....3..x..2..x....2..x..4..x

CROSSREFS

Sequence in context: A034946 A321072 A119941 * A063860 A000878 A052470

Adjacent sequences:  A216338 A216339 A216340 * A216342 A216343 A216344

KEYWORD

nonn

AUTHOR

R. H. Hardin Sep 04 2012

STATUS

approved

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Last modified June 28 15:28 EDT 2022. Contains 354907 sequences. (Running on oeis4.)