4115105280domain: NAppears in sequencesNumber of simplices in barycentric subdivision of n-simplex.at n=6A005464G.f. A(x) = sum(n>0, a(n)*x^n/(2*n-1)!) is the inverse function to x*Bernoulli(x).at n=6A185157a(n) = 7^n - 6*6^n + 15*5^n - 20*4^n + 15*3^n - 6*2^n + 1.at n=12A228909