OFFSET
1,1
COMMENTS
Column 3 of A295606.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
Robert Israel, Maple-assisted proof of formula
FORMULA
Empirical: a(n) = 7*a(n-1) - 9*a(n-2) - 11*a(n-3) + 14*a(n-4) - 53*a(n-5) + 19*a(n-6) + 42*a(n-7) - 23*a(n-8) + 72*a(n-9) + 36*a(n-10) - 25*a(n-11) - 12*a(n-12).
Formula confirmed by Robert Israel, Nov 24 2017 (see link).
EXAMPLE
Some solutions for n=7:
0 0 0 0 0 1 0 1 0 0 0 0 0 0 1 1 0 0 0 1 0
1 1 0 0 1 0 0 0 1 0 0 1 1 0 0 0 0 0 1 0 0
1 1 1 0 0 1 0 0 0 0 1 0 0 1 0 1 0 0 0 1 0
1 1 1 0 0 0 0 1 1 0 0 1 1 0 1 0 0 0 1 0 0
0 0 0 1 1 0 1 1 1 0 0 0 0 1 0 0 1 1 0 0 0
0 0 1 1 1 0 1 0 1 1 0 0 0 0 0 0 1 1 0 0 1
0 0 0 0 0 0 1 1 1 0 0 1 1 0 1 0 1 1 1 0 0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 24 2017
STATUS
approved