n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 12 |
4 | 55 |
5 | 273 |
6 | 1372 |
7 | 6824 |
8 | 33489 |
9 | 162405 |
10 | 779801 |
11 | 3713436 |
12 | 17560803 |
13 | 82553597 |
14 | 386105790 |
15 | 1797803248 |
16 | 8338313697 |
17 | 38539754649 |
18 | 177581276639 |
19 | 815982230060 |
20 | 3740047627071 |
21 | 17103604731961 |
22 | 78054858200448 |
23 | 355541644914072 |
24 | 1616688603539025 |
[1,1,3,12,55,273,1372,6824,33489,162405,779801, 3713436,17560803,82553597,386105790,1797803248, 8338313697,38539754649,177581276639,815982230060, 3740047627071,17103604731961,78054858200448, 355541644914072,1616688603539025] |