n | a(n) |
---|---|
2 | 1 |
3 | 16 |
4 | 150 |
5 | 1104 |
6 | 7077 |
7 | 41504 |
8 | 228810 |
9 | 1205520 |
10 | 6135690 |
11 | 30391520 |
12 | 147277676 |
13 | 700990752 |
14 | 3286733805 |
15 | 15215673408 |
16 | 69675615234 |
17 | 316058238864 |
18 | 1421891923038 |
19 | 6350464644960 |
20 | 28179908990772 |
21 | 124327908683616 |
22 | 545691921346146 |
23 | 2383936774151616 |
24 | 10370479696102500 |
[1,16,150,1104,7077,41504,228810,1205520,6135690, 30391520,147277676,700990752,3286733805, 15215673408,69675615234,316058238864, 1421891923038,6350464644960,28179908990772, 124327908683616,545691921346146,2383936774151616, 10370479696102500] |