A224286 Number of 7Xn 0..3 arrays with diagonals and rows unimodal and antidiagonals nondecreasing.

16384, 16000000, 537465766, 6172817040, 45275725025, 274116529912, 1597855917875, 9622753439382, 59980603070388, 376494813177039, 2313407919278369, 13634051825496929, 76116429236458083, 400003671053134168

Offset: 1

Author

R. H. Hardin Apr 02 2013

Keywords

• nonn

Comments

Row 7 of A224281

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..46