OFFSET
1,1
COMMENTS
Column 1 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).
Conjectures from Colin Barker, Mar 31 2018: (Start)
G.f.: x*(85 - 950*x + 3683*x^2 - 5770*x^3 + 3000*x^4) / ((1 - x)*(1 - 2*x)*(1 - 3*x)*(1 - 4*x)*(1 - 5*x)).
a(n) = 2 + 2^(2+n) + 2^(3+2*n) + 2*3^(1+n) + 5^(1+n).
(End)
EXAMPLE
Some solutions for 3 X 2:
4 2 3 1 2 3 3 0 1 4 1 4 0 4 1 3 3 1 1 3
2 0 0 4 0 3 1 4 1 2 2 1 3 1 3 1 1 3 0 4
2 4 1 3 1 4 3 0 2 3 2 3 0 4 1 3 4 0 1 3
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 06 2011
STATUS
approved