n | a(n) |
---|---|
1 | 0 |
2 | 36 |
3 | 432 |
4 | 1296 |
5 | 15552 |
6 | 139968 |
7 | 559872 |
8 | 5038848 |
9 | 40310784 |
10 | 181398528 |
11 | 1451188224 |
12 | 10883911680 |
13 | 52242776064 |
14 | 391820820480 |
15 | 2821109907456 |
16 | 14105549537280 |
17 | 101559956668416 |
18 | 710919696678912 |
19 | 3656158440062976 |
20 | 25593109080440832 |
21 | 175495605123022848 |
22 | 921351926895869952 |
[0,36,432,1296,15552,139968,559872,5038848, 40310784,181398528,1451188224,10883911680, 52242776064,391820820480,2821109907456, 14105549537280,101559956668416,710919696678912, 3656158440062976,25593109080440832, 175495605123022848,921351926895869952] |