OFFSET
1,1
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 15*a(n-1) +125*a(n-2) -2865*a(n-3) -1490*a(n-4) +219360*a(n-5) -507740*a(n-6) -8437740*a(n-7) +34905816*a(n-8) +161734320*a(n-9) -1006299360*a(n-10) -1062547200*a(n-11) +13887417600*a(n-12) -8926848000*a(n-13) -75188736000*a(n-14) +121927680000*a(n-15).
EXAMPLE
Some solutions for n=3:
7 3 3 1 6 4 5 2 3 4 1 4 0 2 1 3 1 0 6 6 1
6 7 2 4 4 7 5 7 3 3 5 3 0 7 1 7 0 4 6 1 1
5 1 1 2 7 5 6 3 4 4 1 4 4 6 5 4 2 1 6 6 1
5 6 1 0 0 3 2 4 0 3 5 3 3 0 4 3 6 0 7 2 2
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 29 2013
STATUS
approved