Divisors of 396.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =6a(5) =9a(6) =11a(7) =12a(8) =18a(9) =22a(10) =33a(11) =36a(12) =44a(13) =66a(14) =99a(15) =132a(16) =198a(17) =396