a(n) = least k such that the remainder when 16^k is divided by k is n.

Terms

a(0) =3a(1) =7a(2) =13a(3) =6a(4) =11a(5) =10a(6) =87a(7) =62a(8) =209a(9) =18a(10) =35a(11) =122a(12) =4083a(13) =22a(14) =16584420001a(15) =17a(16) =1343851a(17) =34a(18) =453a(19) =44a(20) =215a(21) =26a(22) =469a(23) =58a(24) =69a(25) =46a(26) =121a(27) =36a(28) =266461a(29) =49