Average of divisors except itself is an integer.

Terms

a(0) =2a(1) =3a(2) =5a(3) =6a(4) =7a(5) =9a(6) =11a(7) =13a(8) =15a(9) =17a(10) =19a(11) =23a(12) =25a(13) =29a(14) =30a(15) =31a(16) =33a(17) =37a(18) =41a(19) =43a(20) =44a(21) =47a(22) =49a(23) =51a(24) =53a(25) =59a(26) =61a(27) =67a(28) =69a(29) =71