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| n | a(n) |
|---|---|
| 0 | 3 |
| 1 | 7 |
| 2 | 47 |
| 3 | 2207 |
| 4 | 4481 |
| 5 | 26111 |
| 6 | 189017 |
| 7 | 67271 |
| 8 | 11815633 |
| 9 | 606737 |
| 10 | 708641 |
| 11 | 354023 |
| 12 | 125332284527 |
| 13 | 51939720282500417 |
| 14 | 18062107820423 |
| 15 | 1376080289340623571113 |
| 16 | 4012316132900773615751 |
| 17 | 983669740542169 |
| 18 | 4443427285129103 |
| 19 | 19744046038229790810567377584607 |
| 20 | 4300749014896245437702886338812998834884967953 |
| 21 | 41572359968343362282287450730112204489086145685200294134959430572332688727999 |
[3,7,47,2207,4481,26111,189017,67271,11815633, 606737,708641,354023,125332284527, 51939720282500417,18062107820423, 1376080289340623571113,4012316132900773615751, 983669740542169,4443427285129103, 19744046038229790810567377584607, 4300749014896245437702886338812998834884967953, 41572359968343362282287450730112204489086145685200\ 294134959430572332688727999] |