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| n | a(n) |
|---|---|
| 1 | 21 |
| 2 | 103 |
| 3 | 2361 |
| 4 | 42938 |
| 5 | 696879 |
| 6 | 10000720 |
| 7 | 132409292 |
| 8 | 1666872519 |
| 9 | 20066430819 |
| 10 | 230659006886 |
| 11 | 2533164156501 |
| 12 | 26642899561323 |
| 13 | 269106482492802 |
| 14 | 2617519574246115 |
| 15 | 24584394461026549 |
| 16 | 223533029891507710 |
[21,103,2361,42938,696879,10000720,132409292, 1666872519,20066430819,230659006886,2533164156501, 26642899561323,269106482492802,2617519574246115, 24584394461026549,223533029891507710] |