1,2

Table of n, a(n) for n=1..61.

Sequence in context: A039220 A048135 A304812 * A091213 A211347 A258777

Adjacent sequences: A026497 A026498 A026499 * A026501 A026502 A026503

nonn,easy

Clark Kimberling

More terms from Naohiro Nomoto, Sep 15 2001

approved