Positive integers k that divide 16^k - 1.

Terms

a(0) =1a(1) =3a(2) =5a(3) =9a(4) =15a(5) =21a(6) =25a(7) =27a(8) =39a(9) =45a(10) =55a(11) =63a(12) =75a(13) =81a(14) =105a(15) =117a(16) =125a(17) =135a(18) =147a(19) =155a(20) =165a(21) =171a(22) =189a(23) =195a(24) =205a(25) =225a(26) =243a(27) =273a(28) =275a(29) =315