n | a(n) |
---|---|
0 | 2 |
1 | 4 |
2 | 14 |
3 | 58 |
4 | 242 |
5 | 994 |
6 | 4034 |
7 | 16258 |
8 | 65282 |
9 | 261634 |
10 | 1047554 |
11 | 4192258 |
12 | 16773122 |
13 | 67100674 |
14 | 268419074 |
15 | 1073709058 |
16 | 4294901762 |
17 | 17179738114 |
18 | 68719214594 |
19 | 274877382658 |
20 | 1099510579202 |
21 | 4398044413954 |
22 | 17592181850114 |
23 | 70368735789058 |
24 | 281474959933442 |
25 | 1125899873288194 |
[2,4,14,58,242,994,4034,16258,65282,261634, 1047554,4192258,16773122,67100674,268419074, 1073709058,4294901762,17179738114,68719214594, 274877382658,1099510579202,4398044413954, 17592181850114,70368735789058,281474959933442, 1125899873288194] |