n | a(n) |
---|---|
1 | 0 |
2 | 1 |
3 | 90 |
4 | 2248 |
5 | 43000 |
6 | 755100 |
7 | 13003620 |
8 | 226262400 |
9 | 4037765760 |
10 | 74481120000 |
11 | 1425927888000 |
12 | 28389466828800 |
13 | 588245898240000 |
14 | 12685887076262400 |
15 | 284623499160000000 |
16 | 6639289429893120000 |
17 | 160886197351047168000 |
18 | 4046412223559946240000 |
19 | 105527367894862577664000 |
[0,1,90,2248,43000,755100,13003620,226262400, 4037765760,74481120000,1425927888000, 28389466828800,588245898240000,12685887076262400, 284623499160000000,6639289429893120000, 160886197351047168000,4046412223559946240000, 105527367894862577664000] |