Numbers k such that the sum of proper divisors or aliquot parts of k^2 is a square.
A063893
Numbers k such that the sum of proper divisors or aliquot parts of k^2 is a square.
Terms
- a(0) =1a(1) =3a(2) =49a(3) =35713a(4) =102851a(5) =949818597a(6) =1070640001a(7) =74145779101a(8) =138452510557a(9) =158236686397a(10) =640606652893
External references
- oeis: A063893