OFFSET
1,1
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 15*a(n-1) - 24*a(n-2) - 8*a(n-3).
Empirical g.f.: x*(209 - 391*x - 128*x^2) / (1 - 15*x + 24*x^2 + 8*x^3). - Colin Barker, Nov 24 2018
EXAMPLE
Some solutions for n=3:
1 0 0 1 1 1 0 1 0 1 0 0 1 0 1 1 0 0 1 0
0 0 0 0 1 0 1 1 0 1 0 0 0 0 0 1 1 0 1 1
1 0 0 1 0 1 1 0 1 1 0 1 1 0 0 0 0 0 0 1
0 0 0 1 0 0 1 1 0 1 0 1 1 0 0 0 0 0 1 1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 28 2014
STATUS
approved