n | a(n) |
---|---|
1 | 1 |
2 | 10 |
3 | 90 |
4 | 840 |
5 | 8400 |
6 | 90720 |
7 | 1058400 |
8 | 13305600 |
9 | 179625600 |
10 | 2594592000 |
11 | 39956716800 |
12 | 653837184000 |
13 | 11333177856000 |
14 | 207484333056000 |
15 | 4001483566080000 |
16 | 81096733605888000 |
17 | 1723305589125120000 |
18 | 38318206628782080000 |
19 | 889833909490606080000 |
20 | 21543347282404147200000 |
[1,10,90,840,8400,90720,1058400,13305600, 179625600,2594592000,39956716800,653837184000, 11333177856000,207484333056000,4001483566080000, 81096733605888000,1723305589125120000, 38318206628782080000,889833909490606080000, 21543347282404147200000] |