Numbers k such that sum of 9th powers of divisors of k is divisible by the square of Euler-phi of k.
A094468
Numbers k such that sum of 9th powers of divisors of k is divisible by the square of Euler-phi of k.
Terms
- a(0) =1a(1) =2a(2) =3a(3) =6a(4) =14a(5) =42a(6) =3810a(7) =26670a(8) =34162a(9) =41256a(10) =48546a(11) =87096a(12) =102486a(13) =131934a(14) =210482a(15) =288792a(16) =315723a(17) =318990a(18) =430122a(19) =529848a(20) =609672a(21) =631446a(22) =979830a(23) =1023366a(24) =1203960a(25) =1473374a(26) =1683126a(27) =1920699a(28) =2210061a(29) =2241934
External references
- oeis: A094468