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| n | a(n) |
|---|---|
| 1 | 7 |
| 2 | 35 |
| 3 | 208 |
| 4 | 1198 |
| 5 | 7022 |
| 6 | 41035 |
| 7 | 240237 |
| 8 | 1406038 |
| 9 | 8230727 |
| 10 | 48180019 |
| 11 | 282036139 |
| 12 | 1650978414 |
| 13 | 9664491503 |
| 14 | 56573952014 |
| 15 | 331172398977 |
| 16 | 1938615771254 |
| 17 | 11348262181134 |
| 18 | 66430417127424 |
| 19 | 388870142636120 |
| 20 | 2276366675982209 |
[7,35,208,1198,7022,41035,240237,1406038,8230727, 48180019,282036139,1650978414,9664491503, 56573952014,331172398977,1938615771254, 11348262181134,66430417127424,388870142636120, 2276366675982209] |