A250102 - cp's OEIS frontend

A250102 a(n) = 2*5^n - (1+2i)^(2n) - (1-2i)^(2n) where i = sqrt(-1).

n	a(n)
0	0
1	16
2	64
3	16
4	2304
5	5776
6	7744
7	309136
8	451584
9	2062096
10	38837824
11	27920656
12	424030464
13	4570300816
14	1039933504
15	74815378576
16	501671890944
17	2396689936
18	11857885086784
19	50863084730896
20	8725926945024
21	1727825132557456
22	4673690093529664
23	5056176437385616
24	234290415599944704

[0, 16, 64, 16, 2304, 5776, 7744, 309136, 451584, 2062096, 38837824, 27920656, 424030464, 4570300816, 1039933504, 74815378576, 501671890944, 2396689936, 11857885086784, 50863084730896, 8725926945024, 1727825132557456, 4673690093529664, 5056176437385616, 234290415599944704]

cp's OEIS Frontend

A250102 a(n) = 2*5^n - (1+2i)^(2n) - (1-2i)^(2n) where i = sqrt(-1).

Table of values

List of values