n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 10 |
3 | 37 |
4 | 150 |
5 | 653 |
6 | 2990 |
7 | 14157 |
8 | 68470 |
9 | 335533 |
10 | 1657470 |
11 | 8227277 |
12 | 40957190 |
13 | 204250413 |
14 | 1019649550 |
15 | 5093448397 |
16 | 25452860310 |
17 | 127221189293 |
18 | 635976675230 |
19 | 3179495693517 |
20 | 15896315681830 |
21 | 79478090576173 |
22 | 397379990430510 |
[1,3,10,37,150,653,2990,14157,68470,335533, 1657470,8227277,40957190,204250413,1019649550, 5093448397,25452860310,127221189293,635976675230, 3179495693517,15896315681830,79478090576173, 397379990430510] |