1,1

The graph of the first differences (A138684) of this sequence is fractal-like.

Table of n, a(n) for n=1..66.

Cf. A001333, A005652, A114889, A138684.

Sequence in context: A065193 A116047 A061885 * A072426 A189137 A230548

Adjacent sequences: A138680 A138681 A138682 * A138684 A138685 A138686

nonn

John W. Layman, Mar 26 2008

approved