Numbers whose sum of the squares of divisors is also a square number.

Terms

a(0) =1a(1) =42a(2) =246a(3) =287a(4) =728a(5) =1434a(6) =1673a(7) =1880a(8) =4264a(9) =6237a(10) =9799a(11) =9855a(12) =18330a(13) =21352a(14) =21385a(15) =24856a(16) =36531a(17) =39990a(18) =46655a(19) =57270a(20) =66815a(21) =92664a(22) =125255a(23) =156570a(24) =182665a(25) =208182a(26) =212949a(27) =242879a(28) =273265a(29) =380511