Real part of (2 + 3i)^n.

Terms

a(0) =1a(1) =2a(2) =-5a(3) =-46a(4) =-119a(5) =122a(6) =2035a(7) =6554a(8) =-239a(9) =-86158a(10) =-341525a(11) =-246046a(12) =3455641a(13) =17021162a(14) =23161315a(15) =-128629846a(16) =-815616479a(17) =-1590277918a(18) =4241902555a(19) =37641223154a(20) =95420159401a(21) =-107655263398a(24) =584824319281