a(n) = 4*16^n + 8*4^n + 17.
A225928
a(n) = 4*16^n + 8*4^n + 17.
Terms
- a(0) =29a(1) =113a(2) =1169a(3) =16913a(4) =264209a(5) =4202513a(6) =67141649a(7) =1073872913a(8) =17180393489a(9) =274880004113
External references
- oeis: A225928
A225928
a(n) = 4*16^n + 8*4^n + 17.