OFFSET
1,2
COMMENTS
Row 4 of A254218
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=4
..6....6....1....4....4....4....4....6....1....6....1....1....1....4....6....4
..4....2....5....6....2....6....6....4....3....4....5....5....3....2....3....2
..5....6....3....2....4....2....4....2....2....6....3....4....5....3....5....6
..1....4....1....4....6....6....6....4....4....4....6....6....1....1....4....4
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 26 2015
STATUS
approved