A183891 Number of arrangements of n+3 numbers in 0..8 with each number being the sum mod 9 of three others.

1, 241, 81751, 2466535, 34099017, 356237575, 3382161175, 31040377215, 281338882705, 2538405887395, 22865861038983, 205856624277475, 1852911128126185, 16676836226840751, 150093537945401959

Offset: 1

Author

R. H. Hardin Jan 07 2011

Keywords

• nonn

Comments

Column 8 of A183892

Examples

			Some solutions for n=2
..0....3....3....0....8....6....0....3....1....6....3....6....6....3....6....0
..3....6....3....3....6....8....6....6....3....0....6....3....2....1....6....3
..6....0....3....3....2....2....6....0....7....6....3....3....8....4....3....6
..6....6....0....6....6....6....3....6....3....3....0....3....6....7....0....6
..6....6....6....3....5....5....0....0....4....0....0....0....5....3....0....0
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..22