n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 12 |
3 | 280 |
4 | 13328 |
5 | 1016608 |
6 | 120249536 |
7 | 19735743872 |
8 | 4349101334784 |
9 | 1233253332705792 |
10 | 437938810884459520 |
11 | 190333673674118699008 |
12 | 99369086035110941036544 |
13 | 61369835997419856216006656 |
[1,2,12,280,13328,1016608,120249536,19735743872, 4349101334784,1233253332705792,437938810884459520, 190333673674118699008,99369086035110941036544, 61369835997419856216006656] |