%I

%S 1,1,1,2,2,1,3,3,4,4,1,2,4,3,3,5,4,4,3,4,7,4,4,5,7,5,4,5,5,6,6,7,7,9,

%T 7,9,11,8,9,9,9,8,6,7,7,6,6,8,9,8,8,9,10,7,8,9,10,11,7,8,11,11,10,12,

%U 13,13,12,11,14,12,11,13,14,12,12,14,14,13,14,14,15,15,13,14,14,11,10,13,12,13,13,12,15

%N Sum of exponents of primes in multinomial coefficient M(4n; 2n,n,n)/M(3n; n,n,n).

%K nonn

%O 1,4

%A _Clark Kimberling_