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 | 0 |
| 2 | 1 |
| 3 | 20 |
| 4 | 21 |
| 5 | 24 |
| 6 | 153 |
| 7 | 240 |
| 8 | 241 |
| 9 | 289 |
| 10 | 304 |
| 11 | 324 |
| 12 | 370 |
| 13 | 371 |
| 14 | 407 |
| 15 | 440 |
| 16 | 441 |
| 17 | 593 |
| 18 | 739 |
| 19 | 2167 |
| 20 | 2284 |
| 21 | 2348 |
| 22 | 2484 |
| 23 | 2583 |
| 24 | 2860 |
| 25 | 2861 |
| 26 | 3009 |
| 27 | 3029 |
| 28 | 3093 |
| 29 | 3249 |
| 30 | 4288 |
| 31 | 5859 |
| 32 | 6888 |
| 33 | 7996 |
| 34 | 9898 |