n | a(n) |
---|---|
1 | 3 |
2 | 3 |
3 | 9 |
4 | 36 |
5 | 108 |
6 | 351 |
7 | 1053 |
8 | 3240 |
9 | 9720 |
10 | 29403 |
11 | 88209 |
12 | 265356 |
13 | 796068 |
14 | 2390391 |
15 | 7171173 |
16 | 21520080 |
17 | 64560240 |
18 | 193700403 |
19 | 581101209 |
20 | 1743362676 |
21 | 5230088028 |
22 | 15690441231 |
23 | 47071323693 |
24 | 141214502520 |
25 | 423643507560 |
[3,3,9,36,108,351,1053,3240,9720,29403,88209, 265356,796068,2390391,7171173,21520080,64560240, 193700403,581101209,1743362676,5230088028, 15690441231,47071323693,141214502520,423643507560] |