%I A070828
%S A070828 1,1,2,5,9,12,18,27,31,43,53,58,70,73,76,99,115,123,118,148,156,186,
%T A070828 208,212,251,252,265,309,298,312,342,395,396,397,454,472,508,562,561,
%U A070828 570,610,612,654,663,686,752,727
%N A070828 Sum of prime factors of Catalan numbers A000108(n), n>=2, with n=0 and 
               n=1 terms added.
%C A070828 a(0) := 1=: a(2) for A000108(0)= 1 = A000108(1). Sometimes a(0)= 0 =a(1) 
               is chosen instead.
%Y A070828 Cf. A001414 (for natural numbers), A064725 (for Fibonacci), A070827 (for 
               Lucas).
%Y A070828 Sequence in context: A056549 A034806 A034307 this_sequence A112988 A139405 
               A104862
%Y A070828 Adjacent sequences: A070825 A070826 A070827 this_sequence A070829 A070830 
               A070831
%K A070828 nonn,easy
%O A070828 0,3
%A A070828 Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de), May 10, 
               2002