n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 9 |
4 | 66 |
5 | 650 |
6 | 8250 |
7 | 127519 |
8 | 2318876 |
9 | 48626556 |
10 | 1154334060 |
11 | 30589513350 |
12 | 895415799960 |
13 | 28693464851688 |
14 | 999009599484624 |
15 | 37554576369815400 |
16 | 1516080931559327280 |
17 | 65418533528228549744 |
18 | 3004726893339734134128 |
19 | 146370356574519380115240 |
[1,1,2,9,66,650,8250,127519,2318876,48626556, 1154334060,30589513350,895415799960, 28693464851688,999009599484624,37554576369815400, 1516080931559327280,65418533528228549744, 3004726893339734134128,146370356574519380115240] |