n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 10 |
3 | 57 |
4 | 378 |
5 | 2730 |
6 | 20853 |
7 | 165592 |
8 | 1353297 |
9 | 11307168 |
10 | 96148149 |
11 | 829336122 |
12 | 7238765532 |
13 | 63816716547 |
14 | 567425771478 |
15 | 5082596905629 |
16 | 45820260590481 |
17 | 415423374916503 |
18 | 3785371205061825 |
19 | 34647928319586375 |
20 | 318419608552433190 |
21 | 2937021429784279707 |
[1,3,10,57,378,2730,20853,165592,1353297,11307168, 96148149,829336122,7238765532,63816716547, 567425771478,5082596905629,45820260590481, 415423374916503,3785371205061825, 34647928319586375,318419608552433190, 2937021429784279707] |