OFFSET
1,1
COMMENTS
Column 5 of A224262
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = (1009/907200)*n^10 + (1489/181440)*n^9 + (6571/60480)*n^8 + (18937/30240)*n^7 + (148447/43200)*n^6 + (74281/8640)*n^5 + (10535767/181440)*n^4 + (1477907/45360)*n^3 + (1282339/25200)*n^2 - (151027/252)*n + 913 for n>4
EXAMPLE
Some solutions for n=3
..0..0..1..1..0....0..1..1..1..1....0..0..0..0..2....1..0..0..0..0
..0..0..1..1..1....1..2..1..1..1....0..0..0..1..2....1..1..0..0..0
..0..1..2..1..1....2..2..2..2..1....0..0..1..2..2....2..1..0..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 02 2013
STATUS
approved