OFFSET
1,1
COMMENTS
Column 7 of A268809.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
R. H. Hardin, Empirical recurrence of order 68
FORMULA
Empirical recurrence of order 68 (see link above)
EXAMPLE
Some solutions for n=3
..2..2..2..2..2..1..2. .0..0..0..1..0..0..0. .0..0..1..0..1..0..0
..2..2..2..2..2..2..1. .0..0..0..0..1..0..1. .1..0..0..1..0..0..1
..1..2..1..2..1..0..0. .0..1..0..0..0..0..1. .0..1..0..0..1..0..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 13 2016
STATUS
approved