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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 33 |
| 2 | 15553 |
| 3 | 27748833 |
| 4 | 61371200001 |
| 5 | 155741521320033 |
| 6 | 487874692844719489 |
| 7 | 1730097641006678817249 |
| 8 | 6559621957318406477234689 |
| 9 | 26511434186466256434467280033 |
| 10 | 113203209912753307355868621335553 |
| 11 | 503697803885283278416185835107071649 |
| 12 | 2318764463485777975432760948801307487809 |
[1,33,15553,27748833,61371200001,155741521320033, 487874692844719489,1730097641006678817249, 6559621957318406477234689, 26511434186466256434467280033, 113203209912753307355868621335553, 503697803885283278416185835107071649, 2318764463485777975432760948801307487809] |