n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | 2 |
3 | 3 |
4 | 40 |
5 | 185 |
6 | 2556 |
7 | 22057 |
8 | 349616 |
9 | 4519377 |
10 | 83642860 |
11 | 1439639201 |
12 | 31015493928 |
13 | 663158322697 |
14 | 16468280168900 |
15 | 418772642545545 |
16 | 11847925722273376 |
17 | 348085509493265825 |
18 | 11091199095506163420 |
19 | 368912674236287743633 |
20 | 13099432280183074041560 |
[1,0,2,3,40,185,2556,22057,349616,4519377, 83642860,1439639201,31015493928,663158322697, 16468280168900,418772642545545,11847925722273376, 348085509493265825,11091199095506163420, 368912674236287743633,13099432280183074041560] |