Sum of the 7th powers of the squarefree divisors of n.

Terms

a(0) =1a(1) =129a(2) =2188a(3) =129a(4) =78126a(5) =282252a(6) =823544a(7) =129a(8) =2188a(9) =10078254a(10) =19487172a(11) =282252a(12) =62748518a(13) =106237176a(14) =170939688a(15) =129a(16) =410338674a(17) =282252a(18) =893871740a(19) =10078254a(20) =1801914272a(21) =2513845188a(22) =3404825448a(23) =282252a(24) =78126a(25) =8094558822a(26) =2188a(27) =106237176a(28) =17249876310a(29) =22051219752