n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 6 |
3 | 30 |
4 | 198 |
5 | 1526 |
6 | 13014 |
7 | 119454 |
8 | 1161094 |
9 | 11828966 |
10 | 125456438 |
11 | 1378837422 |
12 | 15654724742 |
13 | 183216332886 |
14 | 2207257195798 |
15 | 27347515306814 |
16 | 348276224255878 |
17 | 4557686850206662 |
18 | 61280403794571894 |
19 | 846507901281129550 |
20 | 12013072624622078854 |
21 | 175127895948991871542 |
[1,2,6,30,198,1526,13014,119454,1161094,11828966, 125456438,1378837422,15654724742,183216332886, 2207257195798,27347515306814,348276224255878, 4557686850206662,61280403794571894, 846507901281129550,12013072624622078854, 175127895948991871542] |