1,1
Table of n, a(n) for n=1..28.
2.492636156932911...
Cf. A001113, A000796, A001622, A131563.
Sequence in context: A195729 A011181 A134822 * A155523 A019912 A081344
Adjacent sequences: A133054 A133055 A133056 * A133058 A133059 A133060
cons,easy,nonn
Omar E. Pol, Nov 10 2007
approved