Odd numbers y such that x^2 + y^2 = 13^n with x and y coprime.

Terms

a(0) =1a(1) =3a(2) =5a(3) =9a(4) =119a(5) =597a(6) =2035a(7) =4449a(8) =239a(9) =56403a(10) =341525a(11) =1315911a(12) =3455641a(13) =3627003a(14) =23161315a(15) =186118929a(16) =815616479a(17) =2474152797a(18) =4241902555a(19) =6712571031a(20) =95420159401a(21) =485257533003a(24) =584824319281