Numbers that are equal to the product of the numerator and denominator of the harmonic mean of their divisors.

A348828

Numbers that are equal to the product of the numerator and denominator of the harmonic mean of their divisors.

Terms

    a(0) =1a(1) =30a(2) =138a(3) =210a(4) =2280a(5) =4676a(6) =5970a(7) =6972a(8) =8372a(9) =10290a(10) =12012a(11) =12306a(12) =20370a(13) =22386a(14) =105420a(15) =116844a(16) =118524a(17) =153480a(18) =189420a(19) =195860a(20) =204204a(21) =218430a(22) =289560a(23) =293880a(24) =362180a(25) =369740a(26) =408510a(27) =414990a(28) =494760a(29) =525420

External references