OFFSET
1,1
COMMENTS
Row 6 of A250081
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = (85/252)*n^9 + (1445/168)*n^8 + (347/7)*n^7 + (361/3)*n^6 + (631/4)*n^5 + (3775/24)*n^4 + (9602/63)*n^3 + (8381/84)*n^2 + (377/14)*n + 1
EXAMPLE
Some solutions for n=2
..2....2....0....2....1....2....2....1....1....0....2....1....1....2....1....1
..1....0....1....0....1....1....1....0....2....2....0....0....1....2....2....0
..0....1....1....1....0....1....1....2....0....1....0....2....0....1....1....0
..1....0....0....1....0....1....0....2....0....0....0....2....1....0....2....1
..0....1....0....1....2....1....0....1....1....1....0....0....1....0....0....1
..0....0....1....1....0....0....0....1....0....0....2....0....1....0....2....0
..2....0....0....2....1....1....0....1....2....0....0....0....1....0....1....2
..2....0....2....2....0....2....2....1....1....1....0....2....1....0....1....0
..0....0....2....2....2....2....1....0....0....0....0....2....0....1....1....0
..0....0....0....0....0....2....2....2....0....0....1....0....2....0....1....0
..1....2....0....1....2....1....0....1....2....2....2....0....1....1....2....0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 11 2014
STATUS
approved