Numbers k such that sum of proper divisors or aliquot parts of k^2 (excluding 1) is a square, or A048050(k^2) is a square.
A063900
Numbers k such that sum of proper divisors or aliquot parts of k^2 (excluding 1) is a square, or A048050(k^2) is a square.
Terms
- a(0) =866a(1) =9271a(2) =18167a(3) =30887a(4) =39959a(5) =114607a(6) =119279a(7) =129911a(8) =153631a(9) =239111a(10) =343207a(11) =517591a(12) =582583a(13) =602159a(14) =607340a(15) =1202282a(16) =1397863a(17) =1729999a(18) =1920647a(19) =2533183a(20) =2547119a(21) =2558183a(22) =5740127a(23) =7122959a(24) =9379871a(25) =10218407a(26) =10891103a(27) =13549399
External references
- oeis: A063900