OFFSET
1,1
COMMENTS
Column 6 of A224676.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 4*a(n-1) - 5*a(n-2) + a(n-3) + 2*a(n-4) - a(n-5) for n > 6.
Empirical g.f.: x*(189 - 456*x + 143*x^2 + 292*x^3 - 187*x^4 + 10*x^5) / ((1 - x)^3*(1 - x - x^2)). - Colin Barker, Feb 17 2018
EXAMPLE
Some solutions for n=3:
1 0 1 0 1 0 2 1 1 1 1 1 1 2 0 0 0 0 1 0 0
1 0 1 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 1
0 0 1 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 1
0 0 1 0 1 0 1 2 1 1 1 1 1 1 0 0 0 0 1 0 1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 14 2013
STATUS
approved