n | a(n) |
---|---|
0 | 2 |
1 | 2 |
2 | 11 |
3 | 56 |
4 | 245 |
5 | 1010 |
6 | 4079 |
7 | 16364 |
8 | 65513 |
9 | 262118 |
10 | 1048547 |
11 | 4194272 |
12 | 16777181 |
13 | 67108826 |
14 | 268435415 |
15 | 1073741780 |
16 | 4294967249 |
17 | 17179869134 |
18 | 68719476683 |
19 | 274877906888 |
20 | 1099511627717 |
21 | 4398046511042 |
22 | 17592186044351 |
23 | 70368744177596 |
[2,2,11,56,245,1010,4079,16364,65513,262118, 1048547,4194272,16777181,67108826,268435415, 1073741780,4294967249,17179869134,68719476683, 274877906888,1099511627717,4398046511042, 17592186044351,70368744177596] |