n | a(n) |
---|---|
1 | 1 |
2 | 4 |
3 | 144 |
4 | 331776 |
5 | 26011238400 |
6 | 660727073341440000 |
7 | 3779719071732351369216000000 |
8 | 11832225237539469009819996424230666240000 |
9 | 30522879094287825948996777484664523152536511038095360000 |
10 | 99649061600109839440372937690884668992908741561885362729330828902400000000 |
[1,4,144,331776,26011238400,660727073341440000, 3779719071732351369216000000, 11832225237539469009819996424230666240000, 30522879094287825948996777484664523152536511038095\ 360000, 99649061600109839440372937690884668992908741561885\ 362729330828902400000000] |