n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 9 |
4 | 33 |
5 | 113 |
6 | 403 |
7 | 1409 |
8 | 4977 |
9 | 17489 |
10 | 61619 |
11 | 216809 |
12 | 763377 |
13 | 2686881 |
14 | 9458787 |
15 | 33295297 |
16 | 117206177 |
17 | 412579681 |
18 | 1452347043 |
19 | 5112464521 |
20 | 17996645761 |
21 | 63350804881 |
22 | 223004208243 |
23 | 785007489729 |
24 | 2763341973393 |
25 | 9727369663793 |
[1,1,3,9,33,113,403,1409,4977,17489,61619,216809, 763377,2686881,9458787,33295297,117206177, 412579681,1452347043,5112464521,17996645761, 63350804881,223004208243,785007489729, 2763341973393,9727369663793] |