n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 14 |
4 | 80 |
5 | 510 |
6 | 3479 |
7 | 24848 |
8 | 183465 |
9 | 1389090 |
10 | 10726452 |
11 | 84150858 |
12 | 668825768 |
13 | 5373971036 |
14 | 43580383095 |
15 | 356234802952 |
16 | 2932097981824 |
17 | 24279982680870 |
18 | 202134854855973 |
19 | 1690839212784240 |
20 | 14204198452365180 |
21 | 119784707913644598 |
22 | 1013675671656956976 |
[1,3,14,80,510,3479,24848,183465,1389090,10726452, 84150858,668825768,5373971036,43580383095, 356234802952,2932097981824,24279982680870, 202134854855973,1690839212784240, 14204198452365180,119784707913644598, 1013675671656956976] |