n | a(n) |
---|---|
0 | 1 |
1 | 12 |
2 | 132 |
3 | 1452 |
4 | 15972 |
5 | 175692 |
6 | 1932546 |
7 | 21257280 |
8 | 233822160 |
9 | 2571956640 |
10 | 28290564720 |
11 | 311185670400 |
12 | 3422926421970 |
13 | 37650915208500 |
14 | 414146038003500 |
15 | 4555452101075700 |
16 | 50108275682741100 |
17 | 551172361422635700 |
[1,12,132,1452,15972,175692,1932546,21257280, 233822160,2571956640,28290564720,311185670400, 3422926421970,37650915208500,414146038003500, 4555452101075700,50108275682741100, 551172361422635700] |