n | a(n) |
---|---|
2 | 2 |
3 | 3 |
4 | 6 |
5 | 18 |
6 | 108 |
7 | 1944 |
8 | 209952 |
9 | 408146688 |
10 | 85691213438976 |
11 | 34974584955819144511488 |
12 | 2997014624388697307377363936018956288 |
13 | 104819342594514896999066634490728502944926883876041385836544 |
[2,3,6,18,108,1944,209952,408146688, 85691213438976,34974584955819144511488, 2997014624388697307377363936018956288, 10481934259451489699906663449072850294492688387604\ 1385836544] |