%I #9 Sep 15 2012 11:50:36
%S 1,3,25,245,32065,400023,68635477,930138521,178987624513,
%T 518401146543811,7506908923471953,23596358977508462295,
%U 5180299766448679532059,77180849825857621779893
%N (C(2p,p)-2)/(2p) where p runs through the primes.
%F a(n) = A022553(prime(n)).
%K nonn
%O 1,2
%A _Benoit Cloitre_, Sep 11 2003
%E Typo in definition corrected by Vladimir Shevelev, Sep 05 2010