a(n) = Sum_{d|n} n^tau(d).

Terms

a(0) =1a(1) =6a(2) =12a(3) =84a(4) =30a(5) =1374a(6) =56a(7) =4680a(8) =819a(9) =10210a(10) =132a(11) =3008748a(12) =182a(13) =38822a(14) =51090a(15) =1118480a(16) =306a(17) =34123698a(18) =380a(19) =64168820a(20) =195384a(21) =235246a(22) =552a(23) =110267095704a(24) =16275a(25) =458354a(26) =551880a(27) =482528508a(28) =870a(29) =656102432730