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%I #6 Oct 26 2017 17:47:27
%S 2,3,5,6,6,7,11,9,11,12,12,13,15,14,15,15,16,15,18,17,20,22,22,22,23,
%T 22,23,22,23,25,28,25,25,29,28,28,32,30,32,31,30,31,34,34,34,34,36,35,
%U 37,34,36,38,38,38,40,38,41,42,42,40,44,46,44,43,43,44,46,42,46,47,47,46,48,47,50,51,50
%N Sum of exponents in prime-power factorization of C(4n,2n).
%H Ivan Neretin, <a href="/A023834/b023834.txt">Table of n, a(n) for n = 1..10000</a>
%t Table[Total[FactorInteger[Binomial[4 n, 2 n]][[All, 2]]], {n, 77}] (* _Ivan Neretin_, Oct 26 2017 *)
%K nonn
%O 1,1
%A _Clark Kimberling_
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