n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 6 |
3 | 23 |
4 | 107 |
5 | 590 |
6 | 3786 |
7 | 27821 |
8 | 230869 |
9 | 2137978 |
10 | 21873854 |
11 | 245151555 |
12 | 2987967551 |
13 | 39358156310 |
14 | 557259550034 |
15 | 8440866957273 |
16 | 136211005966889 |
17 | 2333068710452146 |
18 | 42276699542130166 |
19 | 808068680469402095 |
20 | 16248405328930779027 |
21 | 342877404288485770718 |
22 | 7576652528705018522906 |
[1,2,6,23,107,590,3786,27821,230869,2137978, 21873854,245151555,2987967551,39358156310, 557259550034,8440866957273,136211005966889, 2333068710452146,42276699542130166, 808068680469402095,16248405328930779027, 342877404288485770718,7576652528705018522906] |