n | a(n) |
---|---|
1 | 1 |
2 | 3 |
3 | 34 |
4 | 294 |
5 | 4996 |
6 | 72612 |
7 | 1661680 |
8 | 34029840 |
9 | 981118240 |
10 | 25947526560 |
11 | 902963019520 |
12 | 29279156256000 |
13 | 1193967167680000 |
14 | 45861003136704000 |
15 | 2144641818280192000 |
16 | 95220827527499520000 |
17 | 5023176259163442688000 |
18 | 253121597596239128064000 |
19 | 14869466904778827894784000 |
[1,3,34,294,4996,72612,1661680,34029840,981118240, 25947526560,902963019520,29279156256000, 1193967167680000,45861003136704000, 2144641818280192000,95220827527499520000, 5023176259163442688000,253121597596239128064000, 14869466904778827894784000] |