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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 9 |
| 3 | 54 |
| 4 | 323 |
| 5 | 1848 |
| 6 | 10293 |
| 7 | 56738 |
| 8 | 312327 |
| 9 | 1723692 |
| 10 | 9549785 |
| 11 | 53121654 |
| 12 | 296593547 |
| 13 | 1661423104 |
| 14 | 9333552509 |
| 15 | 52565738570 |
| 16 | 296696569871 |
| 17 | 1677887732820 |
| 18 | 9505147063713 |
| 19 | 53928737011358 |
| 20 | 306393222740883 |
| 21 | 1742919983985192 |
| 22 | 9925790283119429 |
| 23 | 56584658970159474 |
| 24 | 322879453747840023 |
[2,9,54,323,1848,10293,56738,312327,1723692, 9549785,53121654,296593547,1661423104,9333552509, 52565738570,296696569871,1677887732820, 9505147063713,53928737011358,306393222740883, 1742919983985192,9925790283119429, 56584658970159474,322879453747840023] |