n | a(n) |
---|---|
1 | 1 |
2 | 0 |
3 | 0 |
4 | 0 |
5 | 2 |
6 | 7 |
7 | 51 |
8 | 300 |
9 | 2238 |
10 | 18028 |
11 | 164945 |
12 | 1662067 |
13 | 18423138 |
14 | 222380433 |
15 | 2905942904 |
16 | 40864642560 |
17 | 615376173176 |
18 | 9880203467184 |
19 | 168483518571789 |
20 | 3041127459127222 |
21 | 57926238289894992 |
22 | 1161157775616335125 |
23 | 24434798429947993043 |
24 | 538583682037962702384 |
[1,0,0,0,2,7,51,300,2238,18028,164945,1662067, 18423138,222380433,2905942904,40864642560, 615376173176,9880203467184,168483518571789, 3041127459127222,57926238289894992, 1161157775616335125,24434798429947993043, 538583682037962702384] |