n | a(n) |
---|---|
1 | 1 |
2 | 0 |
3 | 85 |
4 | 156 |
5 | 2928 |
6 | 10880 |
7 | 101040 |
8 | 512500 |
9 | 3706880 |
10 | 21434424 |
11 | 142567200 |
12 | 873807820 |
13 | 5667708960 |
14 | 35731836120 |
15 | 230763023408 |
16 | 1477455187500 |
17 | 9565561745040 |
18 | 61835264112640 |
19 | 402074969960400 |
20 | 2616685548364056 |
21 | 17090016552803440 |
22 | 111789735908403600 |
[1,0,85,156,2928,10880,101040,512500,3706880, 21434424,142567200,873807820,5667708960, 35731836120,230763023408,1477455187500, 9565561745040,61835264112640,402074969960400, 2616685548364056,17090016552803440, 111789735908403600] |