A224280 Number of nX7 0..3 arrays with diagonals and rows unimodal and antidiagonals nondecreasing.

1163, 180821, 8626382, 233090092, 4728056658, 86539248276, 1597855917875, 31198793873704, 648539832987579, 14190379537730766, 321738654013526452, 7458658599338643026, 175162125039011466648, 4143668812111247607851

Offset: 1

Author

R. H. Hardin Apr 02 2013

Keywords

• nonn

Comments

Column 7 of A224281

Examples

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

Links

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