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A204288
Number of (n+2)X6 0..3 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally exactly two different ways, and new values 0..3 introduced in row major order
0
1429921, 69321821, 3531083953, 103672509054, 5112434552746, 246289063621747, 8867170877747911, 413064418681389891
OFFSET
1,1
COMMENTS
Column 4 of A204289
EXAMPLE
Some solutions for n=3
..0..0..0..0..0..1....0..0..0..0..0..0....0..0..0..1..0..2....0..0..1..1..0..1
..2..3..1..0..3..1....0..0..1..1..0..0....1..0..3..1..3..1....0..2..1..0..0..0
..1..1..1..0..1..1....1..1..1..1..0..2....1..0..1..1..1..1....0..1..1..3..0..1
..0..0..0..0..0..1....0..3..1..0..0..1....0..0..0..0..0..0....0..1..1..1..0..1
..2..1..0..0..2..0....0..2..1..0..0..0....0..0..3..1..1..2....1..1..0..0..0..0
CROSSREFS
Sequence in context: A186837 A054852 A242824 * A321040 A345614 A346331
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 13 2012
STATUS
approved