n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 6 |
3 | 25 |
4 | 137 |
5 | 936 |
6 | 7672 |
7 | 73361 |
8 | 801705 |
9 | 9856342 |
10 | 134640146 |
11 | 2023140417 |
12 | 33163934641 |
13 | 588936102860 |
14 | 11263023492372 |
15 | 230783643185881 |
16 | 5044101110058737 |
17 | 117136294344278346 |
18 | 2880200768035996990 |
[1,2,6,25,137,936,7672,73361,801705,9856342, 134640146,2023140417,33163934641,588936102860, 11263023492372,230783643185881,5044101110058737, 117136294344278346,2880200768035996990] |