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| n | a(n) |
|---|---|
| 1 | 11 |
| 2 | 41 |
| 3 | 181 |
| 4 | 811 |
| 5 | 881 |
| 6 | 1181 |
| 7 | 1481 |
| 8 | 1811 |
| 9 | 4111 |
| 10 | 4441 |
| 11 | 4481 |
| 12 | 8111 |
| 13 | 11411 |
| 14 | 14411 |
| 15 | 18181 |
| 16 | 18481 |
| 17 | 41141 |
| 18 | 41411 |
| 19 | 44111 |
| 20 | 48481 |
| 21 | 81181 |
| 22 | 84181 |
| 23 | 84481 |
| 24 | 84811 |
| 25 | 88411 |
| 26 | 88811 |
| 27 | 118411 |
| 28 | 141181 |
| 29 | 141481 |
| 30 | 141811 |
| 31 | 144481 |
| 32 | 148411 |
| 33 | 181141 |
| 34 | 184111 |
| 35 | 184181 |
| 36 | 184441 |
| 37 | 411841 |
| 38 | 418181 |
[11,41,181,811,881,1181,1481,1811,4111,4441,4481, 8111,11411,14411,18181,18481,41141,41411,44111, 48481,81181,84181,84481,84811,88411,88811,118411, 141181,141481,141811,144481,148411,181141,184111, 184181,184441,411841,418181] |