1,2

Using similar arguments as in comment in A256547, we obtain that every term is 0,2,5,6,13,20,41.

Peter J. C. Moses, Table of n, a(n) for n = 1..1000

Cf. A001014, A089306, A256385, A256503, A256546, A256547, A256581.

Sequence in context: A342121 A258764 A109083 * A292251 A231715 A137678

Adjacent sequences: A256809 A256810 A256811 * A256813 A256814 A256815

nonn

Vladimir Shevelev and Peter J. C. Moses, Apr 10 2015

approved