OFFSET
1,1
COMMENTS
Row 5 of A250336
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = (1/105)*n^9 + (34/35)*n^8 + (25/2)*n^7 + 50*n^6 + 92*n^5 + (1384/15)*n^4 + (621/14)*n^3 - (173/21)*n^2 - (193/15)*n + 1
EXAMPLE
Some solutions for n=3
..3....2....0....1....0....1....0....1....0....2....2....3....1....2....3....0
..2....1....2....3....2....3....2....3....0....0....0....2....1....0....0....1
..0....2....2....1....1....1....3....2....2....3....0....2....1....2....1....0
..1....2....0....1....2....2....0....0....3....1....3....2....0....2....1....1
..3....2....1....1....2....3....2....2....0....1....2....2....3....0....1....0
..2....0....1....1....3....2....2....2....0....0....2....2....2....2....0....0
..2....2....1....0....2....2....2....3....0....2....2....3....0....2....2....0
..3....2....1....0....2....1....3....2....0....1....0....2....1....2....0....3
..2....1....3....1....3....2....1....2....3....1....1....3....1....3....1....0
..0....3....0....2....2....0....2....0....1....3....2....1....1....1....1....0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 19 2014
STATUS
approved