n | a(n) |
---|---|
1 | 15 |
2 | 252 |
3 | 3048 |
4 | 34560 |
5 | 403200 |
6 | 4390848 |
7 | 45732192 |
8 | 487710720 |
9 | 5079674880 |
10 | 52124083200 |
11 | 542890252800 |
12 | 5618427494400 |
13 | 58517854617600 |
14 | 591272607744000 |
15 | 6026281863275520 |
16 | 60762014342184960 |
17 | 623846047297536000 |
18 | 6394202229664972800 |
19 | 64417520701204070400 |
20 | 652677739551129600000 |
[15,252,3048,34560,403200,4390848,45732192, 487710720,5079674880,52124083200,542890252800, 5618427494400,58517854617600,591272607744000, 6026281863275520,60762014342184960, 623846047297536000,6394202229664972800, 64417520701204070400,652677739551129600000] |