OFFSET
1,1
COMMENTS
Row 5 of A224012.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = (1009/907200)*n^10 + (913/36288)*n^9 + (20887/60480)*n^8 + (92987/30240)*n^7 + (835267/43200)*n^6 + (125341/1728)*n^5 + (33910279/181440)*n^4 + (8169817/45360)*n^3 + (2581069/25200)*n^2 + (35674/63)*n + 336 for n>3.
EXAMPLE
Some solutions for n=3
..1..2..2....1..1..1....0..1..2....2..2..2....0..2..2....2..2..2....0..1..2
..1..1..1....0..0..0....1..1..2....0..0..1....1..2..2....0..2..2....2..2..2
..1..1..2....0..0..0....0..1..1....0..1..1....0..1..1....1..1..1....0..2..2
..0..0..1....1..1..1....0..1..2....0..1..2....0..0..2....0..1..1....0..0..1
..0..1..2....0..0..1....2..2..2....2..2..2....0..1..2....0..2..2....0..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 30 2013
STATUS
approved