A023829 - OEIS

%I #8 Nov 02 2017 18:43:19

%S 0,4,3,5,6,8,9,9,6,10,10,13,11,15,14,15,13,17,14,17,15,19,20,18,18,21,

%T 19,21,17,24,23,26,22,26,25,25,24,28,27,26,25,28,27,29,26,31,31,33,29,

%U 34,28,31,30,33,33,32,30,34,35,37,34,42,41,41,37,40,38,42,37,44,42,41,42,45,45,46,43,45

%N Sum of exponents in prime-power factorization of C(4n,n-3).

%H Ivan Neretin, <a href="/A023829/b023829.txt">Table of n, a(n) for n = 3..10000</a>

%t Table[PrimeOmega[Binomial[4 n, n - 3]], {n, 3, 78}] (* _Ivan Neretin_, Nov 02 2017 *)

%K nonn

%O 3,2

%A _Clark Kimberling_

%E Offset corrected to 3 by _Ivan Neretin_, Nov 02 2017