n | a(n) |
---|---|
1 | 0 |
2 | 3 |
3 | 105 |
4 | 4620 |
5 | 283500 |
6 | 23700600 |
7 | 2610808200 |
8 | 367783416000 |
9 | 64607286744000 |
10 | 13859305059600000 |
11 | 3567385122341040000 |
12 | 1085582734152396480000 |
13 | 385634331725066424000000 |
14 | 158175715893528308976000000 |
15 | 74203019661816956710800000000 |
16 | 39481403043334753112451840000000 |
[0,3,105,4620,283500,23700600,2610808200, 367783416000,64607286744000,13859305059600000, 3567385122341040000,1085582734152396480000, 385634331725066424000000, 158175715893528308976000000, 74203019661816956710800000000, 39481403043334753112451840000000] |