n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 8 |
4 | 38 |
5 | 212 |
6 | 1309 |
7 | 8818 |
8 | 63599 |
9 | 486431 |
10 | 3914297 |
11 | 32957543 |
12 | 289117257 |
13 | 2633818459 |
14 | 24851646254 |
15 | 242360970744 |
16 | 2438642027680 |
17 | 25279637797827 |
18 | 269638473505847 |
19 | 2955984372213381 |
20 | 33274178272368580 |
21 | 384251966241266988 |
[1,2,8,38,212,1309,8818,63599,486431,3914297, 32957543,289117257,2633818459,24851646254, 242360970744,2438642027680,25279637797827, 269638473505847,2955984372213381, 33274178272368580,384251966241266988] |