167317266613domain: NAppears in sequencesGlaisher's G numbers.at n=8A002111a(n) = Sum_{k=0..n-1} 3^k*B(k)*C(n,k) where B(k) is the k-th Bernoulli number and C(n,k)=binomial(n,k).at n=19A083007Numerator of Bernoulli(n, 1/3).at n=19A157799