OFFSET
1,1
COMMENTS
Column 5 of A254539
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
EXAMPLE
Some solutions for n=4
..6....6....1....4....4....6....4....4....4....1....6....4....1....1....4....6
..4....4....7....5....6....3....4....6....4....5....4....5....7....7....2....3
..6....4....7....6....5....5....7....5....7....2....4....1....4....1....6....6
..6....6....7....1....3....7....5....6....6....7....1....6....4....5....4....7
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 01 2015
STATUS
approved