n | a(n) |
---|---|
0 | 1 |
1 | 5 |
2 | 341 |
3 | 7381 |
4 | 69905 |
5 | 406901 |
6 | 1727605 |
7 | 5884901 |
8 | 17043521 |
9 | 43584805 |
10 | 101010101 |
11 | 216145205 |
12 | 432988561 |
13 | 820586261 |
14 | 1483357205 |
15 | 2574332101 |
16 | 4311810305 |
17 | 6999978821 |
18 | 11054078101 |
19 | 17030739605 |
20 | 25664160401 |
21 | 37908820405 |
22 | 54989488181 |
[1,5,341,7381,69905,406901,1727605,5884901, 17043521,43584805,101010101,216145205,432988561, 820586261,1483357205,2574332101,4311810305, 6999978821,11054078101,17030739605,25664160401, 37908820405,54989488181] |