A194776 Number of lower triangles of an (n+10) X (n+10) 0..6 array with new values introduced in row major order 0..6 and no element unequal to more than one horizontal or vertical neighbor.

11862, 31466, 85007, 231395, 639325, 1782111, 5029741, 14321783, 41203606, 119499674, 349498634, 1029170664, 3050715488, 9092629968, 27237137985, 81930133845, 247359353107, 749090477957

Offset

1,1

Comments

Column 6 of A194778.

Links

Table of n, a(n) for n=1..18.

Example

Some solutions for 11 X 11 including a 6:
  0                      0                      0
  1 1                    1 1                    1 1
  1 1 2                  1 1 1                  1 1 1
  1 1 2 2                2 2 2 2                2 2 2 2
  1 1 2 2 3              2 2 2 2 3              2 2 2 2 2
  1 1 2 2 3 3            2 2 2 2 3 3            3 3 3 3 3 3
  1 1 2 2 3 3 4          2 2 2 2 3 3 4          3 3 3 3 3 3 4
  1 1 2 2 3 3 4 4        2 2 2 2 3 3 4 4        3 3 3 3 3 3 4 4
  1 1 2 2 3 3 4 4 5      2 2 2 2 3 3 4 4 5      3 3 3 3 3 3 4 4 5
  1 1 2 2 3 3 4 4 5 5    2 2 2 2 3 3 4 4 5 5    3 3 3 3 3 3 4 4 5 5
  1 1 2 2 3 3 4 4 5 5 6  2 2 2 2 3 3 4 4 5 5 6  3 3 3 3 3 3 4 4 5 5 6

Crossrefs

Sequence in context: A185496 A249842 A251788 * A253988 A253995 A258905

Adjacent sequences: A194773 A194774 A194775 * A194777 A194778 A194779

Keyword

nonn

Author

R. H. Hardin, Sep 02 2011

Status

approved