n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 6 |
3 | 90 |
4 | 2520 |
5 | 113400 |
6 | 7484400 |
7 | 681040081 |
8 | 81715496353 |
9 | 12500505087678 |
10 | 2374643401938450 |
11 | 548423992273068450 |
12 | 151329242873227786290 |
13 | 49169594830177508466780 |
14 | 18581179389079670034395725 |
15 | 8080585890092465008705929001 |
16 | 4006831811683726939901512184106 |
[1,1,6,90,2520,113400,7484400,681040081, 81715496353,12500505087678,2374643401938450, 548423992273068450,151329242873227786290, 49169594830177508466780, 18581179389079670034395725, 8080585890092465008705929001, 4006831811683726939901512184106] |