1,1
Table of n, a(n) for n=1..55.
Sequence in context: A107271 A196565 A104633 * A064684 A098071 A023360
Adjacent sequences: A102019 A102020 A102021 * A102023 A102024 A102025
easy,nonn
E.J.P. Vening, Jun 19 2007
approved