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| n | a(n) |
|---|---|
| 1 | 225 |
| 2 | 1971 |
| 3 | 17289 |
| 4 | 151659 |
| 5 | 1330353 |
| 6 | 11669859 |
| 7 | 102368025 |
| 8 | 897972507 |
| 9 | 7877016513 |
| 10 | 69097203603 |
| 11 | 606120799401 |
| 12 | 5316892787403 |
| 13 | 46639793487825 |
| 14 | 409124355815619 |
| 15 | 3588839615364921 |
| 16 | 31481307826653051 |
| 17 | 276154091209147617 |
[225,1971,17289,151659,1330353,11669859,102368025, 897972507,7877016513,69097203603,606120799401, 5316892787403,46639793487825,409124355815619, 3588839615364921,31481307826653051, 276154091209147617] |