1,5

Table of n, a(n) for n=1..77.

Cf. A005206, A003160.

Sequence in context: A194214 A251416 A087829 * A087177 A180600 A006159

Adjacent sequences: A078471 A078472 A078473 * A078475 A078476 A078477

nonn

Reinhard Zumkeller, Jan 02 2003

approved