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A199040 Number of nX7 0..2 arrays with values 0..2 introduced in row major order, the number of instances of each value within one of each other, and every element equal to one or two horizontal or vertical neighbors 0
3, 877, 59384, 35902575, 7354780137 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A199041

LINKS

Table of n, a(n) for n=1..5.

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A203688 A253578 A167472 * A094592 A210768 A332193

Adjacent sequences:  A199037 A199038 A199039 * A199041 A199042 A199043

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 02 2011

STATUS

approved

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Last modified January 16 05:22 EST 2022. Contains 350374 sequences. (Running on oeis4.)