login
A229477
Number of defective 4-colorings of an n X 6 0..3 array connected horizontally, antidiagonally and vertically with exactly one mistake, and colors introduced in row-major 0..3 order.
1
70, 6528, 163528, 3443856, 68447552, 1317269920, 24789931648, 458660072320, 8372724171776, 151187740303744, 2705657277058944, 48058690681295360, 848221955477981184, 14889405383369853440, 260129746409903380480
OFFSET
1,1
COMMENTS
Column 6 of A229479.
FORMULA
Empirical recurrence of order 42 (see link above).
EXAMPLE
Some solutions for n=3:
0 1 2 0 1 0 0 1 2 1 2 0 0 1 2 3 1 3 0 1 2 3 0 2
2 0 1 0 2 1 2 3 0 3 1 3 2 0 1 0 2 0 2 3 1 2 1 3
3 2 3 1 3 2 1 1 2 0 2 1 3 2 3 2 1 3 1 2 0 1 2 1
CROSSREFS
Cf. A229479.
Sequence in context: A060057 A363296 A049216 * A213699 A184275 A179713
KEYWORD
nonn
AUTHOR
R. H. Hardin, Sep 24 2013
STATUS
approved