n | a(n) |
---|---|
6 | 1 |
7 | 15 |
8 | 136 |
9 | 969 |
10 | 5985 |
11 | 33649 |
12 | 177100 |
13 | 888030 |
14 | 4292145 |
15 | 20160075 |
16 | 92561040 |
17 | 417225900 |
18 | 1852482996 |
19 | 8122425444 |
20 | 35240152720 |
21 | 151532656696 |
22 | 646626422970 |
23 | 2741188875414 |
24 | 11554258485616 |
25 | 48459472266975 |
[1,15,136,969,5985,33649,177100,888030,4292145, 20160075,92561040,417225900,1852482996,8122425444, 35240152720,151532656696,646626422970, 2741188875414,11554258485616,48459472266975] |