208656domain: NAppears in sequencesExpansion of 1/((1-4*x)*(1-8*x)*(1-10*x)*(1-12*x)).at n=4A028159Integers with exactly 100 divisors.at n=15A163816Bi-unitary harmonic numbers.at n=30A286325Bi-unitary arithmetic numbers k whose mean bi-unitary divisor is a bi-unitary divisor of k.at n=17A361787