A194777 Number of lower triangles of an (n+12) X (n+12) 0..7 array with new values introduced in row major order 0..7 and no element unequal to more than one horizontal or vertical neighbor.

85013, 231445, 639753, 1784723, 5044981, 14399939, 41587186, 121261490, 357312638, 1062459348, 3188769448, 9649809740, 29439886715, 90469050263, 279932030931, 871510145365

Offset: 1

Author

R. H. Hardin, Sep 02 2011

Keywords

• nonn

Comments

Column 7 of A194778.

Examples

			Some solutions for 13 X 13 including a 7:
  0                           0
  1 1                         1 1
  1 1 1                       1 1 1
  2 2 2 2                     2 2 2 2
  2 2 2 2 2                   2 2 2 2 2
  3 3 3 3 3 3                 3 3 3 3 3 3
  3 3 3 3 3 3 3               3 3 3 3 3 3 3
  4 4 4 4 4 4 4 4             4 4 4 4 4 4 4 4
  4 4 4 4 4 4 4 4 4           4 4 4 4 4 4 4 4 4
  5 5 5 5 5 5 5 5 5 5         5 5 5 5 5 5 5 5 5 5
  5 5 5 5 5 5 5 5 5 5 6       5 5 5 5 5 5 5 5 5 5 5
  5 5 5 5 5 5 5 5 5 5 6 6     6 6 6 6 6 6 6 6 6 6 6 6
  5 5 5 5 5 5 5 5 5 5 6 6 7   6 6 6 6 6 6 6 6 6 6 6 6 7