16464000domain: NAppears in sequencesProduct of first n terms of A003046.at n=5A055746Denominator of Sum_{k=1..n} phi(k)/k^3.at n=7A072159a(n)=1/det(M(n)) where M(n) is the n X n matrix with element 1/binomial(n+i+j,n).at n=3A094592