OFFSET
0,3
LINKS
Alois P. Heinz, Table of n, a(n) for n = 0..481 (terms n = 1..210 from R. H. Hardin)
EXAMPLE
Some solutions for n=7
..2....1....6....2....2....6....5....2....6....5....1....2....6....4....5....5
..1....2....3....7....3....5....3....5....3....6....7....7....1....7....1....4
..6....7....4....3....4....7....6....6....2....7....4....6....4....1....2....7
..5....4....2....5....7....2....4....4....5....1....3....3....3....2....7....2
..7....3....5....4....1....3....2....1....4....4....6....5....5....6....6....3
..4....5....1....1....5....4....1....3....1....3....2....4....2....5....4....6
..3....6....7....6....6....1....7....7....7....2....5....1....7....3....3....1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jun 06 2013
EXTENSIONS
a(0)=1 prepended by Alois P. Heinz, Jul 17 2024
STATUS
approved