A265214 - OEIS

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A265214

Number of nX3 0..n*3-1 arrays with upper left zero and lower right n*3-1 and each element differing from its horizontal and vertical neighbors by a power of three.

1, 16, 114, 17740, 959210, 30623109, 1704484254, 71709918479, 2699912810448, 303524301107151, 29867340328858563, 1936299753263097479, 229101723406443756560, 17759983927856012308427, 1168695064338719713271036

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

Column 3 of A265218.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=4

..0..9..6....0..3..4....0..9..6....0..9.10....0..9.10....0..1..0....0..1..4

..9..0..9....1..4..7....3..6..7....9.10..1....3..6..7....1.10..1....3..4..5

.10..1.10....2..5..8....0..9.10....8..7.10....6..7..8....0..1.10....0..1..2