OFFSET
1,1
COMMENTS
Row 5 of A241936
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = (8329/181440)*n^9 + (5921/10080)*n^8 + (19841/6048)*n^7 + (7589/720)*n^6 + (186613/8640)*n^5 + (42487/1440)*n^4 + (15382/567)*n^3 + (20623/1260)*n^2 + (1873/315)*n + 1
EXAMPLE
Some solutions for n=4
..0....1....0....1....0....0....0....0....0....0....2....1....0....1....0....1
..0....4....3....1....1....1....1....2....0....4....0....0....4....0....0....1
..2....0....0....3....1....3....4....3....2....2....1....2....1....0....0....2
..0....0....2....0....4....1....2....1....0....1....1....2....1....4....2....1
..1....0....0....0....0....2....1....0....0....0....0....2....0....0....1....0
..0....2....3....3....0....1....0....0....0....0....3....1....1....0....3....3
..1....2....0....1....3....1....0....3....0....3....0....1....0....0....0....0
..0....2....0....2....1....0....1....0....3....1....1....0....1....0....0....1
..1....0....4....1....2....0....2....3....4....2....0....0....2....4....1....3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, May 02 2014
STATUS
approved