n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 5 |
4 | 14 |
5 | 41 |
6 | 136 |
7 | 453 |
8 | 1625 |
9 | 5916 |
10 | 22413 |
11 | 86262 |
12 | 341145 |
13 | 1364600 |
14 | 5575554 |
15 | 22970257 |
16 | 96219317 |
17 | 405776643 |
18 | 1733558159 |
19 | 7449181815 |
20 | 32339997454 |
21 | 141107551277 |
22 | 620848468901 |
23 | 2743496180912 |
24 | 12207546137457 |
25 | 54524169872592 |
26 | 244949648545018 |
27 | 1104077076016340 |
28 | 5001154826725525 |
[1,1,2,5,14,41,136,453,1625,5916,22413,86262, 341145,1364600,5575554,22970257,96219317, 405776643,1733558159,7449181815,32339997454, 141107551277,620848468901,2743496180912, 12207546137457,54524169872592,244949648545018, 1104077076016340,5001154826725525] |