n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 0 |
3 | 1 |
4 | 4 |
5 | 19 |
6 | 112 |
7 | 771 |
8 | 6088 |
9 | 54213 |
10 | 537392 |
11 | 5867925 |
12 | 69975308 |
13 | 904788263 |
14 | 12607819040 |
15 | 188341689287 |
16 | 3002539594128 |
17 | 50878366664393 |
18 | 913161208490016 |
19 | 17304836525709097 |
20 | 345279674107957524 |
21 | 7235298537356113339 |
[1,1,0,1,4,19,112,771,6088,54213,537392,5867925, 69975308,904788263,12607819040,188341689287, 3002539594128,50878366664393,913161208490016, 17304836525709097,345279674107957524, 7235298537356113339] |