n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 5 |
3 | 42 |
4 | 492 |
5 | 7374 |
6 | 134478 |
7 | 2887128 |
8 | 71281656 |
9 | 1988802720 |
10 | 61860849552 |
11 | 2121993490176 |
12 | 79566300371952 |
13 | 3237181141173264 |
14 | 142019158472311248 |
15 | 6682603650677875584 |
16 | 335698708873243355136 |
17 | 17930674324049810882688 |
18 | 1014685181110897126616448 |
19 | 60641642160287342580586752 |
[1,1,5,42,492,7374,134478,2887128,71281656, 1988802720,61860849552,2121993490176, 79566300371952,3237181141173264, 142019158472311248,6682603650677875584, 335698708873243355136,17930674324049810882688, 1014685181110897126616448, 60641642160287342580586752] |