Numbers whose numerator and denominator of the harmonic mean of their divisors are both 5-smooth numbers.

A348868

Numbers whose numerator and denominator of the harmonic mean of their divisors are both 5-smooth numbers.

Terms

    a(0) =1a(1) =2a(2) =3a(3) =5a(4) =6a(5) =8a(6) =10a(7) =15a(8) =24a(9) =27a(10) =28a(11) =30a(12) =40a(13) =54a(14) =84a(15) =120a(16) =135a(17) =140a(18) =216a(19) =224a(20) =270a(21) =420a(22) =496a(23) =672a(24) =756a(25) =775a(26) =819a(27) =1080a(28) =1120a(29) =1488

External references