n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 1 |
4 | 6 |
5 | 70 |
6 | 1215 |
7 | 27951 |
8 | 799708 |
9 | 27337500 |
10 | 1086190605 |
11 | 49162945645 |
12 | 2496308717826 |
13 | 140489907594114 |
14 | 8678436279296875 |
15 | 583701359488329915 |
16 | 42457773984656284920 |
17 | 3320786296452525792376 |
18 | 277898747312921495246937 |
19 | 24775177557380767822265625 |
[0,1,1,6,70,1215,27951,799708,27337500,1086190605, 49162945645,2496308717826,140489907594114, 8678436279296875,583701359488329915, 42457773984656284920,3320786296452525792376, 277898747312921495246937, 24775177557380767822265625] |