[seqfan] E. P. Herrero's conjecture A159634(n) = psi(2n)/3.

[Peter Luschny]

Recently Enrique Pérez Herrero conjectured that
           A159634(n) = psi(2n)/3
where psi(n) is the Dedekind psi function.

I asked for help on Mathematics Stack Exchange
http://goo.gl/YPd3Vu so far without success.

Perhaps a seqfan can comment on this conjecture
or prove/disprove it?

Peter