1,1

Column 5 of A215904

R. H. Hardin, Table of n, a(n) for n = 1..24

Some solutions for n=3

..0..x..1..x..2....0..x..1..x..2....0..x..1..x..1....0..x..1..x..2

..x..3..x..3..x....x..3..x..4..x....x..2..x..2..x....x..3..x..4..x

..2..x..2..x..2....5..x..6..x..5....3..x..4..x..3....0..x..2..x..3

Sequence in context: A298510 A318898 A247882 * A112515 A001141 A177364

Adjacent sequences: A215898 A215899 A215900 * A215902 A215903 A215904

nonn

R. H. Hardin Aug 26 2012

approved