OFFSET
1,1
COMMENTS
Row 2 of A219828
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = (1/40320)*n^8 - (1/3360)*n^7 - (1/2880)*n^6 + (31/240)*n^5 - (7913/5760)*n^4 + (2933/480)*n^3 + (12179/1120)*n^2 - (33527/280)*n + 202 for n>8
EXAMPLE
Some solutions for n=3
..1..2..1....0..0..2....1..1..3....0..0..0....2..2..3....2..2..3....0..0..2
..1..1..1....0..0..2....3..1..3....0..0..0....3..2..3....2..2..3....1..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 28 2012
STATUS
approved