n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 3 |
3 | 24 |
4 | 158 |
5 | 978 |
6 | 5930 |
7 | 35706 |
8 | 214490 |
9 | 1287450 |
10 | 7725722 |
11 | 46356378 |
12 | 278142362 |
13 | 1668862362 |
14 | 10013190554 |
15 | 60079176090 |
16 | 360475122074 |
17 | 2162850863514 |
18 | 12977105443226 |
19 | 77862633183642 |
20 | 467175800150426 |
21 | 2803054802999706 |
22 | 16818328822192538 |
[0,0,3,24,158,978,5930,35706,214490,1287450, 7725722,46356378,278142362,1668862362,10013190554, 60079176090,360475122074,2162850863514, 12977105443226,77862633183642,467175800150426, 2803054802999706,16818328822192538] |