S-perfect numbers.

Terms

a(0) =6a(1) =24a(2) =28a(3) =96a(4) =126a(5) =224a(6) =384a(7) =496a(8) =1536a(9) =1792a(10) =6144a(11) =8128a(12) =14336a(13) =15872a(14) =24576a(15) =98304a(16) =114688a(17) =393216a(18) =507904a(19) =917504a(20) =1040384a(21) =1572864a(22) =5540590a(23) =6291456a(24) =7340032a(25) =9078520a(26) =16252928a(27) =22528935a(28) =25165824a(29) =33550336