OFFSET
1,2
COMMENTS
Column 7 of A183953
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..52
EXAMPLE
Some solutions for n=4
..7....5....4....7....3....3....1....2....1....2....6....5....3....6....5....0
..3....7....7....4....0....5....4....7....5....6....1....4....1....2....0....4
..5....7....0....1....5....1....7....2....3....6....6....3....1....2....3....0
..3....1....5....5....4....5....2....4....4....2....3....4....6....5....5....6
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 08 2011
STATUS
approved