OFFSET
1,1
COMMENTS
Row 3 of A214011
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = (n+3) *(n+2) *(n+1) *(3493*n^6 +23853*n^5 +62185*n^4 +81783*n^3 +58531*n^2 +22470*n +3780)/22680;
EXAMPLE
Some solutions for n=3
..0..0..1....0..0..2....3..0..0....0..0..3....0..0..3....0..0..0....2..0..0
..2..0..0....2..1..0....0..6..0....1..2..0....1..0..0....0..0..0....0..1..0
..0..6..0....0..0..5....0..0..9....2..1..0....0..3..4....0..4..0....1..2..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jun 30 2012
STATUS
approved