n | a(n) |
---|---|
0 | -1 |
1 | 0 |
2 | 2 |
3 | 9 |
4 | 52 |
5 | 445 |
6 | 5166 |
7 | 75019 |
8 | 1300776 |
9 | 26167257 |
10 | 598577770 |
11 | 15337224991 |
12 | 435020120316 |
13 | 13529095809541 |
14 | 457727913937854 |
15 | 16736043791509995 |
16 | 657590281425958096 |
17 | 27631245762003186865 |
18 | 1236355641557737359570 |
19 | 58689534518861119967287 |
[-1,0,2,9,52,445,5166,75019,1300776,26167257, 598577770,15337224991,435020120316,13529095809541, 457727913937854,16736043791509995, 657590281425958096,27631245762003186865, 1236355641557737359570,58689534518861119967287] |