n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 12 |
4 | 54 |
5 | 259 |
6 | 1293 |
7 | 6634 |
8 | 34716 |
9 | 184389 |
10 | 990711 |
11 | 5372088 |
12 | 29347794 |
13 | 161317671 |
14 | 891313569 |
15 | 4946324886 |
16 | 27552980088 |
17 | 153982124809 |
18 | 862997075691 |
19 | 4848839608228 |
20 | 27304369787694 |
21 | 154059320699211 |
22 | 870796075968693 |
23 | 4929937918315522 |
24 | 27950989413184404 |
[1,1,3,12,54,259,1293,6634,34716,184389,990711, 5372088,29347794,161317671,891313569,4946324886, 27552980088,153982124809,862997075691, 4848839608228,27304369787694,154059320699211, 870796075968693,4929937918315522, 27950989413184404] |