n | a(n) |
---|---|
0 | 1 |
1 | 9 |
2 | 511 |
3 | 9841 |
4 | 87381 |
5 | 488281 |
6 | 2015539 |
7 | 6725601 |
8 | 19173961 |
9 | 48427561 |
10 | 111111111 |
11 | 235794769 |
12 | 469070941 |
13 | 883708281 |
14 | 1589311291 |
15 | 2745954241 |
16 | 4581298449 |
17 | 7411742281 |
18 | 11668193551 |
19 | 17927094321 |
20 | 26947368421 |
21 | 39714002329 |
22 | 57489010371 |
23 | 81870575521 |
24 | 114861197401 |
[1,9,511,9841,87381,488281,2015539,6725601, 19173961,48427561,111111111,235794769,469070941, 883708281,1589311291,2745954241,4581298449, 7411742281,11668193551,17927094321,26947368421, 39714002329,57489010371,81870575521,114861197401] |