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| n | a(n) |
|---|---|
| 1 | 49 |
| 2 | 239 |
| 3 | 815 |
| 4 | 2425 |
| 5 | 6901 |
| 6 | 19179 |
| 7 | 52773 |
| 8 | 145469 |
| 9 | 400713 |
| 10 | 1115601 |
| 11 | 3110323 |
| 12 | 8788819 |
| 13 | 24852989 |
| 14 | 71239929 |
| 15 | 204020245 |
| 16 | 591763945 |
| 17 | 1711883257 |
| 18 | 5010260001 |
| 19 | 14603694017 |
| 20 | 43023663753 |
| 21 | 126092893931 |
| 22 | 373234182183 |
| 23 | 1098179433481 |
| 24 | 3261494794727 |
[49,239,815,2425,6901,19179,52773,145469,400713, 1115601,3110323,8788819,24852989,71239929, 204020245,591763945,1711883257,5010260001, 14603694017,43023663753,126092893931,373234182183, 1098179433481,3261494794727] |