n | a(n) |
---|---|
1 | 2 |
2 | 24 |
3 | 224 |
4 | 1920 |
5 | 15872 |
6 | 129024 |
7 | 1040384 |
8 | 8355840 |
9 | 66977792 |
10 | 536346624 |
11 | 4292870144 |
12 | 34351349760 |
13 | 274844352512 |
14 | 2198889037824 |
15 | 17591649173504 |
16 | 140735340871680 |
17 | 1125891316908032 |
18 | 9007164895002624 |
19 | 72057456598974464 |
20 | 576460202547609600 |
[2,24,224,1920,15872,129024,1040384,8355840, 66977792,536346624,4292870144,34351349760, 274844352512,2198889037824,17591649173504, 140735340871680,1125891316908032,9007164895002624, 72057456598974464,576460202547609600] |