n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 2 |
3 | 9 |
4 | 52 |
5 | 485 |
6 | 4506 |
7 | 53137 |
8 | 699336 |
9 | 10350153 |
10 | 171116470 |
11 | 3099723341 |
12 | 61365024876 |
13 | 1315416053965 |
14 | 30365930429394 |
15 | 751142777311305 |
16 | 19817598092077456 |
17 | 555552329932290449 |
18 | 16489894938382046574 |
19 | 516644525863694081413 |
20 | 17038964994820269425460 |
[1,0,2,9,52,485,4506,53137,699336,10350153, 171116470,3099723341,61365024876,1315416053965, 30365930429394,751142777311305,19817598092077456, 555552329932290449,16489894938382046574, 516644525863694081413,17038964994820269425460] |