OFFSET
1,1
COMMENTS
Column 5 of A215182
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..85
EXAMPLE
Some solutions for n=4
.....2........2........2........2........2........3........3........2
....1.3......1.3......1.3......2.2......1.3......2.4......3.3......2.2
...1.2.3....0.2.4....0.3.3....1.2.3....1.2.3....2.3.4....2.3.4....0.3.3
..1.1.3.3..0.0.3.5..0.2.3.3..0.2.3.3..0.0.3.5..0.2.5.5..0.3.4.5..0.0.4.4
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Aug 05 2012
STATUS
approved