40738698000domain: NAppears in sequencesValue of Product[k/sd(k,3),k=1..n], where sd[k,b] is the sum of the digits of k represented in base b.at n=19A109490Greatest 6th-power-free divisor of n!.at n=18A248772Expansion of e.g.f. 1 / ( 1 - Sum_{k>=0} x^(5*k+4) / (5*k+4)! ).at n=21A365914