n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 23 |
5 | 104 |
6 | 531 |
7 | 2982 |
8 | 18109 |
9 | 117545 |
10 | 808764 |
11 | 5862253 |
12 | 44553224 |
13 | 353713232 |
14 | 2924697019 |
15 | 25124481690 |
16 | 223768976093 |
17 | 2062614190733 |
18 | 19646231085928 |
19 | 193102738376890 |
20 | 1956191484175505 |
21 | 20401540100814142 |
22 | 218825717967033373 |
23 | 2411606083999341827 |
[1,1,2,6,23,104,531,2982,18109,117545,808764, 5862253,44553224,353713232,2924697019,25124481690, 223768976093,2062614190733,19646231085928, 193102738376890,1956191484175505, 20401540100814142,218825717967033373, 2411606083999341827] |