n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 5 |
4 | 80 |
5 | 1232 |
6 | 35402 |
7 | 1194062 |
8 | 70565000 |
9 | 4701427880 |
10 | 368268892232 |
11 | 32176642615592 |
12 | 4268310912989312 |
13 | 538435375681984640 |
14 | 93863308664587110560 |
15 | 20096819872783656177632 |
16 | 4630250413602884766388352 |
17 | 1005800123495980918868450432 |
18 | 286583083615434477248177406080 |
[1,1,5,80,1232,35402,1194062,70565000,4701427880, 368268892232,32176642615592,4268310912989312, 538435375681984640,93863308664587110560, 20096819872783656177632,4630250413602884766388352, 1005800123495980918868450432, 286583083615434477248177406080] |