n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 0 |
3 | 18 |
4 | 144 |
5 | 1196 |
6 | 10122 |
7 | 92280 |
8 | 821038 |
9 | 6991890 |
10 | 58992846 |
11 | 496243152 |
12 | 4159529298 |
13 | 34612046520 |
14 | 286233965312 |
15 | 2357133355050 |
16 | 19343135795244 |
17 | 158206906810656 |
18 | 1289891352293998 |
19 | 10487551431195780 |
20 | 85061169561727062 |
21 | 688372469609962898 |
22 | 5559403964257012514 |
[0,0,0,18,144,1196,10122,92280,821038,6991890, 58992846,496243152,4159529298,34612046520, 286233965312,2357133355050,19343135795244, 158206906810656,1289891352293998, 10487551431195780,85061169561727062, 688372469609962898,5559403964257012514] |