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| n | a(n) |
|---|---|
| 1 | 2277 |
| 2 | 176471 |
| 3 | 3395245 |
| 4 | 31640829 |
| 5 | 189677411 |
| 6 | 845613769 |
| 7 | 3048698613 |
| 8 | 9369900047 |
| 9 | 25430520379 |
| 10 | 62478288201 |
| 11 | 141479051231 |
| 12 | 299315365855 |
| 13 | 597820942629 |
| 14 | 1136532061199 |
| 15 | 2070203713171 |
| 16 | 3632319367413 |
| 17 | 6166018879097 |
| 18 | 10164079181491 |
[2277,176471,3395245,31640829,189677411,845613769, 3048698613,9369900047,25430520379,62478288201, 141479051231,299315365855,597820942629, 1136532061199,2070203713171,3632319367413, 6166018879097,10164079181491] |