A229670 Number of defective 4-colorings of an n X 6 0..3 array connected horizontally, antidiagonally and vertically with exactly two mistakes, and colors introduced in row-major 0..3 order.

50, 33152, 1673561, 50919512, 1289285440, 29775277216, 649844491552, 13636997291008, 277914152727936, 5535687600455328, 108250711858308992, 2084927957331161856, 39646876001815559424, 745764910064051742464

Offset

1,1

Comments

Column 6 of A229672.

Links

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

R. H. Hardin, Empirical recurrence of order 63

Formula

Empirical recurrence of order 63 (see link above).

Example

Some solutions for n=3:
  0 0 1 2 1 2    0 0 0 1 2 0    0 1 0 1 1 2    0 0 1 2 0 1
  1 3 0 3 0 1    1 2 3 0 1 3    0 2 3 2 3 0    3 2 3 1 3 0
  2 1 2 1 3 3    0 1 2 3 0 2    1 0 1 0 2 1    0 1 2 0 3 2

Crossrefs

Sequence in context: A034205 A173170 A146518 * A152514 A015062 A015038

Adjacent sequences: A229667 A229668 A229669 * A229671 A229672 A229673

Keyword

nonn

Author

R. H. Hardin, Sep 27 2013

Status

approved