a(n) is the unique odd positive solution y of 2^n = 7x^2 + y^2.

Terms

a(0) =1a(1) =3a(2) =5a(3) =1a(4) =11a(5) =9a(6) =13a(7) =31a(8) =5a(9) =57a(10) =67a(11) =47a(12) =181a(13) =87a(14) =275a(15) =449a(16) =101a(17) =999a(18) =797a(19) =1201a(20) =2795a(21) =393a(22) =5197a(23) =5983a(24) =4411a(25) =16377a(26) =7555a(27) =25199a(28) =40309a(29) =10089