OFFSET
1,1
COMMENTS
Column 7 of A214906
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..79
EXAMPLE
Some solutions for n=4
.....3........5........3........3........2........5........3........4
....3.3......5.5......1.5......1.5......0.4......3.7......2.4......3.5
...0.4.5....1.7.7....0.3.6....0.3.6....0.3.3....5.5.5....1.4.4....1.4.7
..0.4.4.4..4.4.6.6..1.1.5.5..1.1.4.6..0.0.3.5..2.6.6.6..1.3.4.4..3.3.5.5
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jul 29 2012
STATUS
approved