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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 14 |
| 4 | 119 |
| 5 | 4116 |
| 6 | 4119 |
| 7 | 4466 |
| 8 | 6454 |
| 9 | 95454 |
| 10 | 956554 |
| 11 | 956619 |
| 12 | 959166 |
| 13 | 4116619 |
| 14 | 6415696 |
| 15 | 6441616 |
| 16 | 6445616 |
| 17 | 6446669 |
| 18 | 6641946 |
| 19 | 6644546 |
| 20 | 9959514 |
| 21 | 41169669 |
| 22 | 44665419 |
| 23 | 64466669 |
| 24 | 66644546 |
| 25 | 95469446 |
| 26 | 95469469 |
| 27 | 95611696 |
| 28 | 441544966 |
| 29 | 644666669 |
| 30 | 664499166 |
| 31 | 666416946 |
| 32 | 956114619 |
| 33 | 956115419 |
| 34 | 995966696 |
| 35 | 1191469469 |
| 36 | 4116669114 |
| 37 | 4411541619 |
[1,4,14,119,4116,4119,4466,6454,95454,956554, 956619,959166,4116619,6415696,6441616,6445616, 6446669,6641946,6644546,9959514,41169669,44665419, 64466669,66644546,95469446,95469469,95611696, 441544966,644666669,664499166,666416946,956114619, 956115419,995966696,1191469469,4116669114, 4411541619] |