n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 10 |
4 | 43 |
5 | 201 |
6 | 1038 |
7 | 5538 |
8 | 30667 |
9 | 173593 |
10 | 1001603 |
11 | 5864750 |
12 | 34769374 |
13 | 208267320 |
14 | 1258579654 |
15 | 7663720710 |
16 | 46976034379 |
17 | 289628805623 |
18 | 1794932468571 |
19 | 11175157356522 |
20 | 69864075597643 |
21 | 438403736549145 |
22 | 2760351032959050 |
23 | 17433869214973754 |
24 | 110420300879752990 |
[1,1,3,10,43,201,1038,5538,30667,173593,1001603, 5864750,34769374,208267320,1258579654,7663720710, 46976034379,289628805623,1794932468571, 11175157356522,69864075597643,438403736549145, 2760351032959050,17433869214973754, 110420300879752990] |