n | a(n) |
---|---|
1 | 9 |
2 | 81 |
3 | 217 |
4 | 611 |
5 | 1910 |
6 | 5132 |
7 | 13067 |
8 | 33937 |
9 | 86899 |
10 | 218763 |
11 | 551672 |
12 | 1390836 |
13 | 3491934 |
14 | 8760137 |
15 | 21976254 |
16 | 55062713 |
17 | 137841712 |
18 | 344913621 |
19 | 862466304 |
20 | 2155128256 |
21 | 5382374565 |
22 | 13435295369 |
23 | 33519373349 |
24 | 83589288631 |
25 | 208367881512 |
[9,81,217,611,1910,5132,13067,33937,86899,218763, 551672,1390836,3491934,8760137,21976254,55062713, 137841712,344913621,862466304,2155128256, 5382374565,13435295369,33519373349,83589288631, 208367881512] |