n | a(n) |
---|---|
1 | 1 |
2 | 15 |
3 | 176 |
4 | 1680 |
5 | 13824 |
6 | 102144 |
7 | 696320 |
8 | 4460544 |
9 | 27197440 |
10 | 159318016 |
11 | 902823936 |
12 | 4975493120 |
13 | 26776436736 |
14 | 141180272640 |
15 | 731218182144 |
16 | 3728300048384 |
17 | 18747532247040 |
18 | 93110596009984 |
19 | 457328117678080 |
20 | 2223830986653696 |
21 | 10715840324304896 |
22 | 51209754063667200 |
[1,15,176,1680,13824,102144,696320,4460544, 27197440,159318016,902823936,4975493120, 26776436736,141180272640,731218182144, 3728300048384,18747532247040,93110596009984, 457328117678080,2223830986653696, 10715840324304896,51209754063667200] |