OFFSET
1,1
COMMENTS
Column 4 of A237035
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 120*a(n-1) +6153*a(n-2) -363748*a(n-3) -3957016*a(n-4) +306155172*a(n-5) -1955225983*a(n-6) -32438472776*a(n-7) +200128530735*a(n-8) +1410935167008*a(n-9) -3399280459696*a(n-10) -9790743035136*a(n-11) +31593008567296*a(n-12) -23604586610688*a(n-13) -806694420480*a(n-14) +4431324119040*a(n-15)
EXAMPLE
Some solutions for n=1
..1..1..0..1..2....2..2..2..1..2....0..2..2..2..0....2..1..2..1..2
..0..2..2..2..1....0..2..1..2..1....0..1..2..2..0....0..0..0..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 02 2014
STATUS
approved