n | a(n) |
---|---|
0 | 1 |
1 | 6 |
2 | 45 |
3 | 380 |
4 | 3450 |
5 | 32886 |
6 | 324632 |
7 | 3290040 |
8 | 34034715 |
9 | 357919100 |
10 | 3815041230 |
11 | 41124015036 |
12 | 447534498320 |
13 | 4910258796240 |
14 | 54257308779600 |
15 | 603260892430960 |
16 | 6744185681876505 |
17 | 75764901779438850 |
18 | 854867886710698755 |
19 | 9683529727259434200 |
[1,6,45,380,3450,32886,324632,3290040,34034715, 357919100,3815041230,41124015036,447534498320, 4910258796240,54257308779600,603260892430960, 6744185681876505,75764901779438850, 854867886710698755,9683529727259434200] |