n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 6 |
3 | 30 |
4 | 198 |
5 | 1638 |
6 | 16254 |
7 | 188190 |
8 | 2490102 |
9 | 37067382 |
10 | 613089486 |
11 | 11154460590 |
12 | 221391950598 |
13 | 4760331408198 |
14 | 110229346777374 |
15 | 2734768080189630 |
16 | 72372319913943702 |
17 | 2034948511063817622 |
18 | 60583999401612797166 |
19 | 1903897439808684195150 |
20 | 62980420349165187160998 |
[1,2,6,30,198,1638,16254,188190,2490102,37067382, 613089486,11154460590,221391950598,4760331408198, 110229346777374,2734768080189630, 72372319913943702,2034948511063817622, 60583999401612797166,1903897439808684195150, 62980420349165187160998] |