n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 4 |
3 | 32 |
4 | 192 |
5 | 1280 |
6 | 8192 |
7 | 53248 |
8 | 344064 |
9 | 2228224 |
10 | 14417920 |
11 | 93323264 |
12 | 603979776 |
13 | 3909091328 |
14 | 25300041728 |
15 | 163745628160 |
16 | 1059783180288 |
17 | 6859062771712 |
18 | 44392781971456 |
19 | 287316132233216 |
20 | 1859549040476160 |
21 | 12035254277636096 |
22 | 77893801758162944 |
[0,1,4,32,192,1280,8192,53248,344064,2228224, 14417920,93323264,603979776,3909091328, 25300041728,163745628160,1059783180288, 6859062771712,44392781971456,287316132233216, 1859549040476160,12035254277636096, 77893801758162944] |