n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 8 |
3 | 56 |
4 | 448 |
5 | 3920 |
6 | 36288 |
7 | 349440 |
8 | 3464448 |
9 | 35125760 |
10 | 362522624 |
11 | 3795914240 |
12 | 40224968704 |
13 | 430579701760 |
14 | 4648899846144 |
15 | 50568103690240 |
16 | 553632271155200 |
17 | 6096025799852032 |
18 | 67464070696927232 |
19 | 750003531943903232 |
20 | 8371814935842258944 |
[1,2,8,56,448,3920,36288,349440,3464448,35125760, 362522624,3795914240,40224968704,430579701760, 4648899846144,50568103690240,553632271155200, 6096025799852032,67464070696927232, 750003531943903232,8371814935842258944] |