n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 5 |
3 | 21 |
4 | 84 |
5 | 329 |
6 | 1274 |
7 | 4900 |
8 | 18767 |
9 | 71687 |
10 | 273371 |
11 | 1041348 |
12 | 3964051 |
13 | 15083082 |
14 | 57374296 |
15 | 218205281 |
16 | 829778397 |
17 | 3155194917 |
18 | 11996903828 |
19 | 45614046737 |
20 | 173428037986 |
21 | 659377938380 |
22 | 2506951364015 |
23 | 9531364676687 |
24 | 36237879209259 |
25 | 137774708539300 |
26 | 523812203582283 |
27 | 1991504659990594 |
[0,1,5,21,84,329,1274,4900,18767,71687,273371, 1041348,3964051,15083082,57374296,218205281, 829778397,3155194917,11996903828,45614046737, 173428037986,659377938380,2506951364015, 9531364676687,36237879209259,137774708539300, 523812203582283,1991504659990594] |