n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 2 |
3 | 7 |
4 | 48 |
5 | 469 |
6 | 5584 |
7 | 80235 |
8 | 1367040 |
9 | 26840841 |
10 | 595623680 |
11 | 14752565807 |
12 | 403579762688 |
13 | 12084385256605 |
14 | 393093330282496 |
15 | 13804177426246995 |
16 | 520496287836012544 |
17 | 20973496057176404881 |
18 | 899452315670554017792 |
19 | 40903215737685386469847 |
[0,1,2,7,48,469,5584,80235,1367040,26840841, 595623680,14752565807,403579762688,12084385256605, 393093330282496,13804177426246995, 520496287836012544,20973496057176404881, 899452315670554017792,40903215737685386469847] |