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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 3 |
| 3 | 11 |
| 4 | 14 |
| 5 | 25 |
| 6 | 239 |
| 7 | 981 |
| 8 | 2201 |
| 9 | 5383 |
| 10 | 12967 |
| 11 | 18350 |
| 12 | 104717 |
| 13 | 123067 |
| 14 | 596985 |
| 15 | 1317037 |
| 16 | 25620688 |
| 17 | 206282541 |
| 18 | 438185770 |
| 19 | 644468311 |
| 20 | 18483298478 |
| 21 | 19127766789 |
| 22 | 56738832056 |
| 23 | 473038423237 |
| 24 | 9044468873559 |
| 25 | 18561976170355 |
| 26 | 83292373554979 |
| 27 | 101854349725334 |
| 28 | 592564122181649 |
[1,2,3,11,14,25,239,981,2201,5383,12967,18350, 104717,123067,596985,1317037,25620688,206282541, 438185770,644468311,18483298478,19127766789, 56738832056,473038423237,9044468873559, 18561976170355,83292373554979,101854349725334, 592564122181649] |