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A229688 Number of defective 3-colorings of an n X n 0..2 array connected horizontally and antidiagonally with exactly two mistakes, and colors introduced in row-major 0..2 order. 0
0, 3, 626, 80757, 17724789, 7551515197, 6749642728251, 13137498602431137, 56959853494513069323, 558086310754870843057446, 12478933741531750768879884477, 641265228914623466199892311965220 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Diagonal of A229694.
LINKS
EXAMPLE
Some solutions for n=3:
0 1 2 0 1 0 0 1 0 0 1 0 0 1 2 0 0 1 0 1 0
0 2 0 2 2 1 1 2 1 0 2 2 2 0 0 0 2 0 1 0 1
1 2 2 0 0 1 2 0 2 0 2 1 0 1 0 1 2 1 1 0 2
CROSSREFS
Sequence in context: A225761 A140029 A161964 * A287890 A091261 A332163
KEYWORD
nonn,more
AUTHOR
R. H. Hardin, Sep 27 2013
STATUS
approved

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Last modified June 22 12:21 EDT 2024. Contains 373571 sequences. (Running on oeis4.)