n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 10 |
3 | 37 |
4 | 152 |
5 | 690 |
6 | 3422 |
7 | 18257 |
8 | 103144 |
9 | 608730 |
10 | 3713524 |
11 | 23235490 |
12 | 148281656 |
13 | 961255200 |
14 | 6311395814 |
15 | 41878914665 |
16 | 280365966232 |
17 | 1891270498050 |
18 | 12842102343820 |
19 | 87703053156406 |
20 | 601999871121200 |
21 | 4150859861430252 |
22 | 28736613316786220 |
23 | 199671324115916570 |
[1,3,10,37,152,690,3422,18257,103144,608730, 3713524,23235490,148281656,961255200,6311395814, 41878914665,280365966232,1891270498050, 12842102343820,87703053156406,601999871121200, 4150859861430252,28736613316786220, 199671324115916570] |