n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 23 |
5 | 103 |
6 | 513 |
7 | 2762 |
8 | 15796 |
9 | 94869 |
10 | 593701 |
11 | 3850196 |
12 | 25770934 |
13 | 177508708 |
14 | 1255390070 |
15 | 9100474770 |
16 | 67530683238 |
17 | 512436850330 |
18 | 3973057855227 |
19 | 31453319307023 |
20 | 254112879952118 |
21 | 2094123401459149 |
22 | 17596001216448571 |
23 | 150694616625367985 |
[1,1,2,6,23,103,513,2762,15796,94869,593701, 3850196,25770934,177508708,1255390070,9100474770, 67530683238,512436850330,3973057855227, 31453319307023,254112879952118,2094123401459149, 17596001216448571,150694616625367985] |