n | a(n) |
---|---|
3 | 1 |
4 | 7 |
5 | 39 |
6 | 239 |
7 | 1679 |
8 | 13439 |
9 | 120959 |
10 | 1209599 |
11 | 13305599 |
12 | 159667199 |
13 | 2075673599 |
14 | 29059430399 |
15 | 435891455999 |
16 | 6974263295999 |
17 | 118562476031999 |
18 | 2134124568575999 |
19 | 40548366802943999 |
20 | 810967336058879999 |
[1,7,39,239,1679,13439,120959,1209599,13305599, 159667199,2075673599,29059430399,435891455999, 6974263295999,118562476031999,2134124568575999, 40548366802943999,810967336058879999] |