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 | 1 |
| 2 | 11 |
| 3 | 12 |
| 4 | 124 |
| 5 | 135 |
| 6 | 1111 |
| 7 | 1525 |
| 8 | 13515 |
| 9 | 124816 |
| 10 | 1223462 |
| 11 | 12356910 |
| 12 | 13919571 |
| 13 | 1210320658 |
| 14 | 1243162124 |
| 15 | 1525125625 |
| 16 | 12346121028 |
| 17 | 12478141928 |
| 18 | 12510153130 |
| 19 | 12510254150 |
| 20 | 1234689111216 |
| 21 | 1351553159265 |
| 22 | 1597717414885 |
| 23 | 1713913539247 |
| 24 | 12356910151830 |
| 25 | 13791121336377 |