n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 5 |
3 | 26 |
4 | 136 |
5 | 746 |
6 | 4261 |
7 | 25173 |
8 | 152596 |
9 | 943804 |
10 | 5931561 |
11 | 37768700 |
12 | 243124702 |
13 | 1579577423 |
14 | 10344340396 |
15 | 68212177180 |
16 | 452531832109 |
17 | 3018280278965 |
18 | 20227324602249 |
19 | 136135295125566 |
20 | 919757424512780 |
21 | 6235752585125348 |
22 | 42411283395662960 |
23 | 289289349007740037 |
[1,1,5,26,136,746,4261,25173,152596,943804, 5931561,37768700,243124702,1579577423,10344340396, 68212177180,452531832109,3018280278965, 20227324602249,136135295125566,919757424512780, 6235752585125348,42411283395662960, 289289349007740037] |