n | a(n) |
---|---|
1 | 1 |
2 | 2 |
3 | 4 |
4 | 18 |
5 | 110 |
6 | 772 |
7 | 5936 |
8 | 48618 |
9 | 417398 |
10 | 3716972 |
11 | 34086194 |
12 | 320225348 |
13 | 3069943298 |
14 | 29943487732 |
15 | 296447910268 |
16 | 2973356043818 |
17 | 30166687749922 |
18 | 309197338572932 |
19 | 3198206243665998 |
20 | 33353864893990660 |
21 | 350443763627186256 |
22 | 3707087785160487888 |
23 | 39458245623693926384 |
24 | 422389058260155207568 |
[1,2,4,18,110,772,5936,48618,417398,3716972, 34086194,320225348,3069943298,29943487732, 296447910268,2973356043818,30166687749922, 309197338572932,3198206243665998, 33353864893990660,350443763627186256, 3707087785160487888,39458245623693926384, 422389058260155207568] |