n | a(n) |
---|---|
0 | 1 |
1 | 8 |
2 | 44 |
3 | 207 |
4 | 896 |
5 | 3689 |
6 | 14706 |
7 | 57361 |
8 | 220363 |
9 | 837430 |
10 | 3157440 |
11 | 11835916 |
12 | 44176890 |
13 | 164355675 |
14 | 609981045 |
15 | 2259680355 |
16 | 8359285126 |
17 | 30890694534 |
18 | 114059719703 |
19 | 420887785505 |
20 | 1552362630016 |
21 | 5723494732725 |
22 | 21096366345741 |
23 | 77742879583057 |
24 | 286445422547405 |
[1,8,44,207,896,3689,14706,57361,220363,837430, 3157440,11835916,44176890,164355675,609981045, 2259680355,8359285126,30890694534,114059719703, 420887785505,1552362630016,5723494732725, 21096366345741,77742879583057,286445422547405] |