n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 2 |
4 | 8 |
5 | 38 |
6 | 193 |
7 | 1243 |
8 | 8971 |
9 | 77039 |
10 | 711719 |
11 | 7557974 |
12 | 85038784 |
13 | 1075040038 |
14 | 14252911927 |
15 | 208885729397 |
16 | 3187988600057 |
17 | 53129157538097 |
18 | 917244939572929 |
19 | 17127419083026706 |
20 | 329981266766790136 |
21 | 6823452191056396526 |
22 | 145118585159785011041 |
[1,1,1,2,8,38,193,1243,8971,77039,711719,7557974, 85038784,1075040038,14252911927,208885729397, 3187988600057,53129157538097,917244939572929, 17127419083026706,329981266766790136, 6823452191056396526,145118585159785011041] |