1,1

Diagonal of A229521.

Table of n, a(n) for n=1..9.

Some solutions for n=3:

1 1 0 2 0 1 1 1 2 1 0 2 1 1 1 1 1 0 1 2 1

2 0 2 0 1 0 0 1 0 1 1 0 1 1 1 2 0 2 2 1 1

0 2 0 1 1 1 1 1 1 1 1 1 1 2 1 1 2 0 1 2 1

Cf. A229521.

Sequence in context: A003715 A247030 A009690 * A210833 A174488 A289695

Adjacent sequences: A229510 A229511 A229512 * A229514 A229515 A229516

nonn

R. H. Hardin, Sep 25 2013

approved