1,4

Table of n, a(n) for n=1..81.

Cf. A000010, A015126, A028476, A043343, A066659.

Sequence in context: A297217 A218859 A246691 * A277894 A027636 A173425

Adjacent sequences: A066702 A066703 A066704 * A066706 A066707 A066708

nonn

Vladeta Jovovic, Jan 14 2002

approved