This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 5 |
| 3 | 53 |
| 4 | 353 |
| 5 | 503 |
| 6 | 563 |
| 7 | 653 |
| 8 | 3533 |
| 9 | 5003 |
| 10 | 5303 |
| 11 | 5333 |
| 12 | 5503 |
| 13 | 5563 |
| 14 | 5653 |
| 15 | 6053 |
| 16 | 6353 |
| 17 | 6553 |
| 18 | 6563 |
| 19 | 6653 |
| 20 | 30553 |
| 21 | 33053 |
| 22 | 33353 |
| 23 | 33503 |
| 24 | 33533 |
| 25 | 33563 |
| 26 | 35053 |
| 27 | 35353 |
| 28 | 35363 |
| 29 | 35533 |
| 30 | 35603 |
| 31 | 36353 |
| 32 | 36563 |
| 33 | 36653 |
| 34 | 50033 |
| 35 | 50053 |
| 36 | 50333 |
| 37 | 50363 |
| 38 | 50503 |
| 39 | 53003 |
| 40 | 53353 |
| 41 | 53503 |
| 42 | 53633 |