n | a(n) |
---|---|
4 | 0 |
5 | 1 |
6 | 15 |
7 | 129 |
8 | 891 |
9 | 5611 |
10 | 34213 |
11 | 208230 |
12 | 1285094 |
13 | 8108722 |
14 | 52540098 |
15 | 350375379 |
16 | 2407395908 |
17 | 17048774736 |
18 | 124435165429 |
19 | 935736058614 |
20 | 7246161094614 |
21 | 57749473020305 |
22 | 473358586652328 |
23 | 3987856784525223 |
24 | 34506189729577186 |
25 | 306454001139880689 |
26 | 2791593349164080381 |
[0,1,15,129,891,5611,34213,208230,1285094,8108722, 52540098,350375379,2407395908,17048774736, 124435165429,935736058614,7246161094614, 57749473020305,473358586652328,3987856784525223, 34506189729577186,306454001139880689, 2791593349164080381] |