A183883 Number of arrangements of n+2 numbers in 0..8 with each number being the sum mod 9 of two others

1, 31, 1761, 75451, 1598395, 23327655, 275846173, 2895194179, 28388585391, 267809160367, 2472279047473, 22552186971627, 204400652073763, 1846262280059767, 16646854130219781, 149959684159252819

Offset

1,2

Comments

Column 8 of A183884

Links

R. H. Hardin, Table of n, a(n) for n = 1..53

Example

Some solutions for n=2
..6....3....0....6....0....6....3....3....3....6....3....6....3....3....6....6
..6....0....0....0....6....3....3....6....3....3....6....3....6....0....0....6
..3....6....0....3....6....0....6....0....6....0....3....6....6....6....3....3
..0....3....0....6....3....3....6....3....0....6....0....3....0....6....3....3

Crossrefs

Sequence in context: A185512 A221444 A185665 * A049081 A069432 A338533

Adjacent sequences: A183880 A183881 A183882 * A183884 A183885 A183886

Keyword

nonn

Author

R. H. Hardin Jan 07 2011

Status

approved