n | a(n) |
---|---|
0 | 5 |
1 | 20 |
2 | 120 |
3 | 840 |
4 | 8400 |
5 | 117600 |
6 | 2469600 |
7 | 79027200 |
8 | 3951360000 |
9 | 312157440000 |
10 | 39331837440000 |
11 | 7945031162880000 |
12 | 2582135127936000000 |
13 | 1353038807038464000000 |
14 | 1144670830754540544000000 |
15 | 1564765025641456923648000000 |
16 | 3458130706667619801262080000000 |
[5,20,120,840,8400,117600,2469600,79027200, 3951360000,312157440000,39331837440000, 7945031162880000,2582135127936000000, 1353038807038464000000,1144670830754540544000000, 1564765025641456923648000000, 3458130706667619801262080000000] |