n | a(n) |
---|---|
0 | 1 |
1 | 6 |
2 | 60 |
3 | 744 |
4 | 10224 |
5 | 148896 |
6 | 2250816 |
7 | 34922880 |
8 | 552386304 |
9 | 8867756544 |
10 | 144044098560 |
11 | 2362292213760 |
12 | 39049785446400 |
13 | 649843233546240 |
14 | 10876273137008640 |
15 | 182934715370471424 |
16 | 3090181365862170624 |
17 | 52398620697685524480 |
18 | 891492911924665122816 |
19 | 15213249205591283859456 |
20 | 260315328935885892747264 |
[1,6,60,744,10224,148896,2250816,34922880, 552386304,8867756544,144044098560,2362292213760, 39049785446400,649843233546240,10876273137008640, 182934715370471424,3090181365862170624, 52398620697685524480,891492911924665122816, 15213249205591283859456,260315328935885892747264] |