n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 8 |
3 | 45 |
4 | 236 |
5 | 1306 |
6 | 8088 |
7 | 57078 |
8 | 457416 |
9 | 4118031 |
10 | 41182312 |
11 | 453008435 |
12 | 5436105588 |
13 | 70669378832 |
14 | 989371312216 |
15 | 14840569694868 |
16 | 237449115133392 |
17 | 4036634957288013 |
18 | 72659429231210568 |
19 | 1380529155393034441 |
20 | 27610583107860731324 |
21 | 579822245265075410934 |
[0,1,8,45,236,1306,8088,57078,457416,4118031, 41182312,453008435,5436105588,70669378832, 989371312216,14840569694868,237449115133392, 4036634957288013,72659429231210568, 1380529155393034441,27610583107860731324, 579822245265075410934] |