Nonsquare numbers k such that the denominator of the harmonic mean of the divisors of k is larger than 2*k.

A348827

Nonsquare numbers k such that the denominator of the harmonic mean of the divisors of k is larger than 2*k.

Terms

    a(0) =320000a(1) =941192a(2) =1229312a(3) =3001250a(4) =5120000a(5) =8000000a(6) =14172488a(7) =14623232a(8) =15059072a(9) =19668992a(10) =35701250a(11) =38614472a(12) =42762752a(13) =60236288a(14) =66724352a(15) =75031250a(16) =121726800a(17) =128000000a(18) =143278592a(19) =147061250a(20) =168480000a(21) =222814800a(22) =226759808a(23) =233971712a(24) =257875200a(25) =319813200

External references