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.

70, 6528, 163528, 3443856, 68447552, 1317269920, 24789931648, 458660072320, 8372724171776, 151187740303744, 2705657277058944, 48058690681295360, 848221955477981184, 14889405383369853440, 260129746409903380480

Offset

1,1

Comments

Column 6 of A229479.

Links

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

R. H. Hardin, Empirical recurrence of order 42

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

Adjacent sequences: A229474 A229475 A229476 * A229478 A229479 A229480

Keyword

nonn

Author

R. H. Hardin, Sep 24 2013

Status

approved