n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 12 |
5 | 180 |
6 | 1440 |
7 | 9072 |
8 | 54432 |
9 | 308448 |
10 | 1700352 |
11 | 9722592 |
12 | 58335552 |
13 | 356638464 |
14 | 2173796352 |
15 | 13144674816 |
16 | 78940272384 |
17 | 472093588224 |
18 | 2821539889152 |
19 | 16894457846784 |
20 | 101366747080704 |
21 | 608795590588416 |
22 | 3656220357427200 |
23 | 21947538146863104 |
24 | 131685228881178624 |
[0,0,0,12,180,1440,9072,54432,308448,1700352, 9722592,58335552,356638464,2173796352,13144674816, 78940272384,472093588224,2821539889152, 16894457846784,101366747080704,608795590588416, 3656220357427200,21947538146863104, 131685228881178624] |