1,2

For a guide to related sequences, see A205558.

Table of n, a(n) for n=1..80.

(See the example at A205684.)

(See the program at A205684.)

Cf. A205684, A205558.

Sequence in context: A007690 A239960 A292402 * A143375 A074364 A256610

Adjacent sequences: A205682 A205683 A205684 * A205686 A205687 A205688

nonn

Clark Kimberling, Jan 30 2012

approved