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A215957 Number of horizontal, vertical and diagonal neighbor colorings of the even squares of an nX6 array with new integer colors introduced in row major order 0
2, 34, 1534, 145563, 30312074, 9260821180, 4761748786964, 3146896493234825 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A215959

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for n=4

..0..x..1..x..2..x....0..x..1..x..2..x....0..x..1..x..2..x....0..x..1..x..0..x

..x..1..x..3..x..0....x..1..x..3..x..4....x..3..x..4..x..0....x..2..x..0..x..3

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

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

CROSSREFS

Sequence in context: A264669 A187546 A195005 * A171732 A291903 A340863

Adjacent sequences:  A215954 A215955 A215956 * A215958 A215959 A215960

KEYWORD

nonn

AUTHOR

R. H. Hardin Aug 28 2012

STATUS

approved

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Last modified May 19 13:24 EDT 2022. Contains 353833 sequences. (Running on oeis4.)