Real part of (5 + 12i)^n.

Terms

a(0) =1a(1) =5a(2) =-119a(3) =-2035a(4) =-239a(5) =341525a(6) =3455641a(7) =-23161315a(8) =-815616479a(9) =-4241902555a(10) =95420159401a(12) =584824319281