Super anti-perfect numbers.

Terms

a(0) =7a(1) =167a(2) =507a(3) =543a(4) =3433a(5) =6707a(6) =9615a(7) =15690a(8) =87667a(9) =1023971a(10) =2054435a(11) =5871045a(12) =9150387a(13) =14146891a(14) =63538839a(15) =169623015