Squares that are the sum of the divisors of some number.

Terms

a(0) =1a(1) =4a(2) =36a(3) =121a(4) =144a(5) =256a(6) =324a(7) =400a(8) =576a(9) =784a(10) =900a(11) =961a(12) =1024a(13) =1296a(14) =1600a(15) =1764a(16) =1936a(17) =2304a(18) =2704a(19) =2916a(20) =3136a(21) =3600a(22) =3844a(23) =4096a(24) =4356a(25) =4624a(26) =4900a(27) =5184a(28) =5776a(29) =6084