Take the values in pairs as complex numbers:
1+2i, -3+4i, -11-2i, -7-24i, 41-38i, 117+44i
As a sequence of complex numbers, it is a series of powers of 1+2i:
(1+2i)^1 = 1+2i
(1+2i)^2 = -3+4i
(1+2i)^3 = -11-2i
(1+2i)^4 = -7-24i
(1+2i)^5 = 41-38i
(1+2i)^6 = 117+44i
The next power is (1+2i)^7 = 29+278i, so the next two terms are 29 and 278
Sequence:1, 2, -3, 4, -11, -2, -7, -24, 41, -38, 117, 44, 29, 278. |