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A215958 Number of horizontal, vertical and diagonal neighbor colorings of the even squares of an nX7 array with new integer colors introduced in row major order 0
5, 136, 35167, 5219070, 10289785215, 4761748786964 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A215959

LINKS

Table of n, a(n) for n=1..6.

EXAMPLE

Some solutions for n=4

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

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

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

..x..4..x..2..x..4..x....x..2..x..7..x..2..x....x..3..x..0..x..2..x

CROSSREFS

Sequence in context: A094808 A320995 A061453 * A216337 A142294 A279307

Adjacent sequences:  A215955 A215956 A215957 * A215959 A215960 A215961

KEYWORD

nonn

AUTHOR

R. H. Hardin Aug 28 2012

STATUS

approved

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Last modified February 26 13:41 EST 2021. Contains 341632 sequences. (Running on oeis4.)