OFFSET
1,1
COMMENTS
Column 2 of A183652.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..200
FORMULA
Empirical: a(n) = 15*a(n-1) - 85*a(n-2) + 225*a(n-3) - 274*a(n-4) + 120*a(n-5).
Empirical g.f.: x*(325 - 3874*x + 16055*x^2 - 26930*x^3 + 15000*x^4) / ((1 - x)*(1 - 2*x)*(1 - 3*x)*(1 - 4*x)*(1 - 5*x)). - Colin Barker, Apr 01 2018
EXAMPLE
Some solutions for 5 X 3:
1 2 1 0 3 0 3 1 2 0 4 0 2 2 2 2 2 2 4 1 1
4 1 4 4 1 4 3 1 4 4 0 4 4 0 4 2 2 2 1 2 4
1 2 1 3 0 3 1 3 0 2 2 2 1 3 1 0 4 0 3 2 0
3 2 3 4 1 4 1 3 2 1 3 1 3 1 3 0 4 0 0 3 3
2 1 2 0 3 0 4 0 3 1 3 1 1 3 1 1 3 1 3 2 0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 06 2011
STATUS
approved