OFFSET
1,1
COMMENTS
Column 1 of A204782.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 22*a(n-1) - 308*a(n-3) + 196*a(n-4).
Empirical g.f.: 54*x*(48 - 32*x - 672*x^2 + 441*x^3) / ((1 - 22*x + 14*x^2)*(1 - 14*x^2)). - Colin Barker, Jun 10 2018
EXAMPLE
Some solutions for n=3:
0 0 0 0 0 1 0 1 1 0 1 2 0 0 1 0 0 0 0 1 0
1 0 0 2 0 2 0 1 2 1 0 2 2 2 0 0 0 0 0 1 1
2 1 1 2 2 1 2 1 2 2 0 1 0 0 2 1 1 2 1 0 2
2 0 0 0 2 1 0 0 1 2 1 0 1 0 0 1 2 1 1 2 2
1 2 2 2 0 1 0 2 0 2 2 2 0 2 2 0 2 1 0 1 1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 19 2012
STATUS
approved