n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 9 |
4 | 23 |
5 | 151 |
6 | 361 |
7 | 2409 |
8 | 5783 |
9 | 38551 |
10 | 92521 |
11 | 616809 |
12 | 1480343 |
13 | 9868951 |
14 | 23685481 |
15 | 157903209 |
16 | 378967703 |
17 | 2526451351 |
18 | 6063483241 |
19 | 40423221609 |
20 | 97015731863 |
21 | 646771545751 |
22 | 1552251709801 |
23 | 10348344732009 |
24 | 24836027356823 |
25 | 165573515712151 |
26 | 397376437709161 |
[1,1,9,23,151,361,2409,5783,38551,92521,616809, 1480343,9868951,23685481,157903209,378967703, 2526451351,6063483241,40423221609,97015731863, 646771545751,1552251709801,10348344732009, 24836027356823,165573515712151,397376437709161] |