n | a(n) |
---|---|
0 | 1 |
1 | 18 |
2 | 98 |
3 | 812 |
4 | 5748 |
5 | 43120 |
6 | 316600 |
7 | 2343120 |
8 | 17290256 |
9 | 127726400 |
10 | 943159584 |
11 | 6965532736 |
12 | 51439836352 |
13 | 379886330112 |
14 | 2805462584192 |
15 | 20718413985536 |
16 | 153005867110656 |
17 | 1129951564794880 |
18 | 8344715027364352 |
19 | 61625891492889600 |
[1,18,98,812,5748,43120,316600,2343120,17290256, 127726400,943159584,6965532736,51439836352, 379886330112,2805462584192,20718413985536, 153005867110656,1129951564794880,8344715027364352, 61625891492889600] |