n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 9 |
3 | 109 |
4 | 1457 |
5 | 18231 |
6 | 205837 |
7 | 2112384 |
8 | 20341201 |
9 | 189013501 |
10 | 1725377947 |
11 | 15622028115 |
12 | 140950202021 |
13 | 1269874954518 |
14 | 11433967343409 |
15 | 102926130336136 |
16 | 926421241593985 |
17 | 8338171770377449 |
18 | 75045297684511343 |
19 | 675415983886759045 |
20 | 6078784024809901485 |
[1,1,9,109,1457,18231,205837,2112384,20341201, 189013501,1725377947,15622028115,140950202021, 1269874954518,11433967343409,102926130336136, 926421241593985,8338171770377449, 75045297684511343,675415983886759045, 6078784024809901485] |