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| n | a(n) |
|---|---|
| 1 | 11 |
| 2 | 25 |
| 3 | 31 |
| 4 | 41 |
| 5 | 61 |
| 6 | 71 |
| 7 | 341 |
| 8 | 671 |
| 9 | 2119 |
| 10 | 10231 |
| 11 | 39579 |
| 12 | 52231 |
| 13 | 60341 |
| 14 | 402959 |
| 15 | 1288689 |
| 16 | 1393059 |
| 17 | 1956759 |
| 18 | 16752951 |
| 19 | 108659999 |
| 20 | 181704519 |
| 21 | 794033191 |
| 22 | 1062726071 |
| 23 | 3518397571 |
| 24 | 4062296851 |
| 25 | 4085227151 |
| 26 | 7015608139 |
[11,25,31,41,61,71,341,671,2119,10231,39579,52231, 60341,402959,1288689,1393059,1956759,16752951, 108659999,181704519,794033191,1062726071, 3518397571,4062296851,4085227151,7015608139] |