n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 9 |
3 | 27 |
4 | 81 |
5 | 242 |
6 | 720 |
7 | 2137 |
8 | 6337 |
9 | 18789 |
10 | 55715 |
11 | 165232 |
12 | 490058 |
13 | 1453493 |
14 | 4311025 |
15 | 12786359 |
16 | 37923789 |
17 | 112480082 |
18 | 333610072 |
19 | 989469949 |
20 | 2934716101 |
21 | 8704215281 |
22 | 25816251319 |
23 | 76569665176 |
24 | 227101665034 |
25 | 673571786617 |
26 | 1997779058053 |
27 | 5925309279179 |
[1,3,9,27,81,242,720,2137,6337,18789,55715,165232, 490058,1453493,4311025,12786359,37923789, 112480082,333610072,989469949,2934716101, 8704215281,25816251319,76569665176,227101665034, 673571786617,1997779058053,5925309279179] |