n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 3 |
4 | 7 |
5 | 21 |
6 | 57 |
7 | 171 |
8 | 499 |
9 | 1497 |
10 | 4449 |
11 | 13347 |
12 | 39927 |
13 | 119781 |
14 | 359001 |
15 | 1077003 |
16 | 3230011 |
17 | 9690033 |
18 | 29067105 |
19 | 87201315 |
20 | 261595047 |
21 | 784785141 |
22 | 2354328729 |
23 | 7062986187 |
24 | 21188878707 |
25 | 63566636121 |
26 | 190699668801 |
27 | 572099006403 |
28 | 1716296301207 |
29 | 5148888903621 |
30 | 15446664556857 |
[1,1,3,7,21,57,171,499,1497,4449,13347,39927, 119781,359001,1077003,3230011,9690033,29067105, 87201315,261595047,784785141,2354328729, 7062986187,21188878707,63566636121,190699668801, 572099006403,1716296301207,5148888903621, 15446664556857] |