n | a(n) |
---|---|
5 | 2 |
6 | 24 |
7 | 140 |
8 | 1232 |
9 | 11268 |
10 | 115056 |
11 | 1284360 |
12 | 15596208 |
13 | 204710454 |
14 | 2888897032 |
15 | 43625578836 |
16 | 702025263328 |
17 | 11993721979336 |
18 | 216822550325472 |
19 | 4135337882588880 |
20 | 82986434235959712 |
21 | 1747976804189353962 |
22 | 38559791049947726328 |
23 | 889047923669760546140 |
[2,24,140,1232,11268,115056,1284360,15596208, 204710454,2888897032,43625578836,702025263328, 11993721979336,216822550325472,4135337882588880, 82986434235959712,1747976804189353962, 38559791049947726328,889047923669760546140] |