OFFSET
1,1
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 4*a(n-1) - 4*a(n-2) + 5*a(n-3) - 8*a(n-4) + 3*a(n-5) - 2*a(n-6) + a(n-7) - a(n-8).
Empirical g.f.: x*(2 - 2*x + 4*x^2 - 9*x^3 + 2*x^4 - x^5 + x^6 - x^7) / (1 - 4*x + 4*x^2 - 5*x^3 + 8*x^4 - 3*x^5 + 2*x^6 - x^7 + x^8). - Colin Barker, Sep 29 2018
EXAMPLE
Some solutions for n=7:
0 1 1 0 1 1 0 1 1 1 1 0 0 1 0 0 0 0 1 0
0 1 0 0 1 1 0 0 0 0 0 0 0 1 0 0 1 0 0 0
0 0 0 1 0 0 1 0 0 0 0 1 0 1 0 0 0 0 1 1
1 0 0 0 0 0 0 0 1 1 1 1 0 0 1 0 1 1 1 0
0 1 0 1 1 0 0 1 1 1 1 1 1 0 1 0 1 1 0 0
0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0
0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 1 0 0 0 0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 10 2013
STATUS
approved