A206572 - OEIS

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A206572

Number of nX3 0..3 arrays avoiding the pattern z-1 z-1 z in any row, column or nw-to-se diagonal

61, 3721, 188699, 9509750, 478456896, 24071410239, 1211164182464, 60940227961282, 3066196250895643, 154274761365491709, 7762277323583045839, 390556037506212530634, 19650677663071356937032, 988716329728016793029948

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

OFFSET

1,1

COMMENTS

Column 3 of A206577

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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