1,2
Table of n, a(n) for n=1..18.
Sequence in context: A060924 A213931 A213401 * A009467 A131608 A131707
Adjacent sequences: A013561 A013562 A013563 * A013565 A013566 A013567
sign
Patrick Demichel (patrick.demichel(AT)hp.com)
approved