Numbers n such that the absolute value of the real part of (1+2*I)^n is prime.

Terms

a(0) =2a(1) =3a(2) =4a(3) =5a(4) =7a(5) =11a(6) =13a(7) =17a(8) =19a(9) =89a(10) =163a(11) =167a(12) =233a(13) =251a(14) =349a(15) =401a(16) =757a(17) =1423a(18) =3049a(19) =3643a(20) =11987a(21) =19801a(22) =26393a(23) =32303a(24) =35363a(25) =35863a(26) =36607a(27) =36683