n | a(n) |
---|---|
0 | -1 |
1 | 1 |
2 | 27 |
3 | 540 |
4 | 9800 |
5 | 176176 |
6 | 3162159 |
7 | 56744793 |
8 | 1018249595 |
9 | 18271762300 |
10 | 327873509424 |
11 | 5883451505856 |
12 | 105574253853887 |
13 | 1894453118539345 |
14 | 33994581881622075 |
15 | 610008020755286076 |
16 | 10946149791725643704 |
17 | 196420688230338021808 |
18 | 3524626238354441796015 |
19 | 63246851602149831726825 |
[-1,1,27,540,9800,176176,3162159,56744793, 1018249595,18271762300,327873509424,5883451505856, 105574253853887,1894453118539345, 33994581881622075,610008020755286076, 10946149791725643704,196420688230338021808, 3524626238354441796015,63246851602149831726825] |