n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 5 |
4 | 16 |
5 | 54 |
6 | 154 |
7 | 425 |
8 | 1098 |
9 | 2743 |
10 | 6570 |
11 | 15345 |
12 | 34839 |
13 | 77489 |
14 | 168882 |
15 | 362054 |
16 | 764097 |
17 | 1591252 |
18 | 3272640 |
19 | 6657037 |
20 | 13403600 |
21 | 26740202 |
22 | 52892435 |
23 | 103808566 |
24 | 202263470 |
25 | 391464293 |
26 | 752923563 |
27 | 1439745067 |
28 | 2738144031 |
29 | 5181039986 |
[0,1,5,16,54,154,425,1098,2743,6570,15345,34839, 77489,168882,362054,764097,1591252,3272640, 6657037,13403600,26740202,52892435,103808566, 202263470,391464293,752923563,1439745067, 2738144031,5181039986] |