n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 2 |
4 | 6 |
5 | 23 |
6 | 123 |
7 | 788 |
8 | 5853 |
9 | 49331 |
10 | 465113 |
11 | 4850461 |
12 | 55433830 |
13 | 688963307 |
14 | 9251792973 |
15 | 133490155744 |
16 | 2059562402903 |
17 | 33835668047687 |
18 | 589707357402531 |
19 | 10867464157846630 |
20 | 211139303638163097 |
21 | 4313274345751046121 |
[1,1,1,2,6,23,123,788,5853,49331,465113,4850461, 55433830,688963307,9251792973,133490155744, 2059562402903,33835668047687,589707357402531, 10867464157846630,211139303638163097, 4313274345751046121] |