1,3

Diagonal of A196017

Table of n, a(n) for n=1..12.

Some solutions for n=4

..2..3..2..2....2..3..2..0....0..2..3..2....0..2..2..2....2..2..3..2

..3..3..0..2....3..4..3..2....2..3..4..3....2..3..0..2....2..0..3..3

..3..4..3..2....2..3..0..2....2..0..3..2....3..4..3..2....2..3..4..3

..2..3..2..0....0..2..2..2....2..2..2..0....2..3..2..0....0..2..3..2

Sequence in context: A123012 A175522 A226418 * A080515 A258943 A009381

Adjacent sequences: A196008 A196009 A196010 * A196012 A196013 A196014

nonn

R. H. Hardin Sep 26 2011

approved