n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 8 |
3 | 35 |
4 | 170 |
5 | 872 |
6 | 4740 |
7 | 26994 |
8 | 161006 |
9 | 1001009 |
10 | 6476976 |
11 | 43480373 |
12 | 302250196 |
13 | 2170406149 |
14 | 16070240276 |
15 | 122453910495 |
16 | 958755921686 |
17 | 7701233828576 |
18 | 63381318474768 |
19 | 533793776053926 |
20 | 4595440308780620 |
21 | 40400161269188412 |
22 | 362367733795887848 |
[1,2,8,35,170,872,4740,26994,161006,1001009, 6476976,43480373,302250196,2170406149,16070240276, 122453910495,958755921686,7701233828576, 63381318474768,533793776053926,4595440308780620, 40400161269188412,362367733795887848] |