n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 8 |
4 | 21 |
5 | 61 |
6 | 203 |
7 | 724 |
8 | 2600 |
9 | 9291 |
10 | 33525 |
11 | 123537 |
12 | 463796 |
13 | 1759184 |
14 | 6706976 |
15 | 25696524 |
16 | 99069838 |
17 | 384429159 |
18 | 1499778661 |
19 | 5875513183 |
20 | 23099489574 |
21 | 91123553946 |
22 | 360649997698 |
23 | 1431724692900 |
24 | 5699142280127 |
25 | 22741352276386 |
26 | 90949212893978 |
[1,1,3,8,21,61,203,724,2600,9291,33525,123537, 463796,1759184,6706976,25696524,99069838, 384429159,1499778661,5875513183,23099489574, 91123553946,360649997698,1431724692900, 5699142280127,22741352276386,90949212893978] |