n | a(n) |
---|---|
4 | 7 |
5 | 38960 |
6 | 11043135 |
7 | 715016960 |
8 | 19498281250 |
9 | 301435761312 |
10 | 3120392830170 |
11 | 23965758136320 |
12 | 146127409139745 |
13 | 741378459250000 |
14 | 3237913809747617 |
15 | 12485709312410880 |
16 | 43342515673364180 |
17 | 137520873034108480 |
18 | 403684061693062500 |
19 | 1107133265664540672 |
20 | 2859892150083272715 |
[7,38960,11043135,715016960,19498281250, 301435761312,3120392830170,23965758136320, 146127409139745,741378459250000,3237913809747617, 12485709312410880,43342515673364180, 137520873034108480,403684061693062500, 1107133265664540672,2859892150083272715] |