n | a(n) |
---|---|
0 | 1 |
1 | 13 |
2 | 156 |
3 | 1872 |
4 | 22464 |
5 | 269568 |
6 | 3234816 |
7 | 38817792 |
8 | 465813504 |
9 | 5589762048 |
10 | 67077144576 |
11 | 804925734912 |
12 | 9659108818944 |
13 | 115909305827328 |
14 | 1390911669927936 |
15 | 16690940039135232 |
16 | 200291280469622784 |
17 | 2403495365635473408 |
18 | 28841944387625680896 |
19 | 346103332651508170752 |
[1,13,156,1872,22464,269568,3234816,38817792, 465813504,5589762048,67077144576,804925734912, 9659108818944,115909305827328,1390911669927936, 16690940039135232,200291280469622784, 2403495365635473408,28841944387625680896, 346103332651508170752] |