n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 3 |
3 | 13 |
4 | 71 |
5 | 461 |
6 | 3447 |
7 | 29093 |
8 | 273343 |
9 | 2829325 |
10 | 31998903 |
11 | 392743957 |
12 | 5201061455 |
13 | 73943424413 |
14 | 1123596277863 |
15 | 18176728317413 |
16 | 311951144828863 |
17 | 5661698774848621 |
18 | 108355864447215063 |
19 | 2181096921557783605 |
[0,1,3,13,71,461,3447,29093,273343,2829325, 31998903,392743957,5201061455,73943424413, 1123596277863,18176728317413,311951144828863, 5661698774848621,108355864447215063, 2181096921557783605] |