OFFSET
1,1
COMMENTS
Row 3 of A224310
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = (1/19160064)*n^12 + (1/1064448)*n^11 + (1507/43545600)*n^10 + (73/161280)*n^9 + (23603/2903040)*n^8 + (111/3584)*n^7 + (13023121/43545600)*n^6 + (130093/96768)*n^5 + (5619469/2177280)*n^4 + (54895/2688)*n^3 - (11456441/1663200)*n^2 + (205131/1540)*n - 196 for n>3
EXAMPLE
Some solutions for n=3
..1..2..0....2..1..1....0..0..0....0..2..1....1..0..0....2..2..1....2..0..0
..2..2..0....2..2..0....0..2..0....2..2..0....0..2..1....2..2..0....0..2..0
..2..2..2....2..0..0....2..0..0....2..1..1....2..2..1....2..2..0....2..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 03 2013
STATUS
approved