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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 144689999986441 |
| 5 | 154698898896451 |
| 6 | 226589999985622 |
| 7 | 234779999977432 |
| 8 | 243788999887342 |
| 9 | 244788898887442 |
| 10 | 253698898896352 |
| 11 | 254689878986452 |
| 12 | 254788878887452 |
| 13 | 254797797797452 |
| 14 | 333878999878333 |
| 15 | 334878898878433 |
| 16 | 335598898895533 |
| 17 | 336589878985633 |
| 18 | 336688878886633 |
[1,2,3,144689999986441,154698898896451, 226589999985622,234779999977432,243788999887342, 244788898887442,253698898896352,254689878986452, 254788878887452,254797797797452,333878999878333, 334878898878433,335598898895533,336589878985633, 336688878886633] |