Numbers k that divide 9^k + 4^k.

Terms

a(0) =1a(1) =13a(2) =169a(3) =2197a(4) =14209a(5) =28561a(6) =184717a(7) =371293a(8) =2401321a(9) =4826809a(10) =15530437a(11) =31217173a(12) =62748517a(13) =130238329a(14) =178895977a(15) =201895681a(16) =405823249a(17) =815730721a(18) =1693098277a(19) =2325647701a(20) =2422762381a(21) =2624643853a(22) =4286414821a(23) =5275702237