OFFSET
1,3
COMMENTS
Row 6 of A270850.
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..15
EXAMPLE
Some solutions for n=3
.......0............2............3............3............3............1
......0.1..........3.3..........3.3..........3.3..........3.2..........0.0
.....0.0.1........2.3.3........3.3.2........3.3.3........2.3.3........0.0.1
....0.0.0.0......3.3.3.2......3.2.3.3......3.3.3.2......3.3.3.3......0.0.0.0
...0.0.0.0.1....3.2.3.3.3....3.3.3.3.2....3.3.3.3.3....3.3.3.2.2....0.0.0.1.0
..0.0.0.1.0.0..2.3.3.3.2.2..2.3.2.3.2.3..3.3.3.3.2.2..2.3.2.3.3.3..1.0.0.1.0.0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 24 2016
STATUS
approved