n | a(n) |
---|---|
3 | 1 |
4 | 12 |
5 | 174 |
6 | 2436 |
7 | 34307 |
8 | 482664 |
9 | 6791772 |
10 | 95567064 |
11 | 1344731653 |
12 | 18921807828 |
13 | 266250046986 |
14 | 3746422451772 |
15 | 52716164405255 |
16 | 741772724044560 |
17 | 10437534301224120 |
18 | 146867252940711408 |
19 | 2066579075472320521 |
[1,12,174,2436,34307,482664,6791772,95567064, 1344731653,18921807828,266250046986,3746422451772, 52716164405255,741772724044560,10437534301224120, 146867252940711408,2066579075472320521] |