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 | 3 |
| 4 | 4 |
| 5 | 7 |
| 6 | 9 |
| 7 | 16 |
| 8 | 18 |
| 9 | 21 |
| 10 | 33 |
| 11 | 34 |
| 12 | 45 |
| 13 | 49 |
| 14 | 57 |
| 15 | 567 |
| 16 | 595 |
| 17 | 685 |
| 18 | 867 |
| 19 | 1867 |
| 20 | 4204 |
| 21 | 5311 |
| 22 | 11493 |
| 23 | 13923 |
| 24 | 19116 |
| 25 | 30471 |
| 26 | 32038 |
| 27 | 34551 |
| 28 | 99408 |
| 29 | 113631 |
| 30 | 134364 |
| 31 | 195399 |