%I #9 Sep 16 2015 09:18:32
%S 2,19,29,67
%N Prime numbers p such that p divides the sum of squares of Catalan numbers A094639(p).
%C Next term is bigger than 2000. - _Stefan Steinerberger_, Jul 21 2006
%t Select[Prime[Range[303]], IntegerQ[Sum[(Binomial[2n,n]/(n + 1))^2, {n, 0, #}]/# ] &] (* _Stefan Steinerberger_, Jul 21 2006 *)
%Y Cf. A094639.
%K nonn
%O 1,1
%A _Alexander Adamchuk_, Jul 04 2006