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 | 11111110 |
| 4 | 13477450 |
| 5 | 20483494 |
| 6 | 22705717 |
| 7 | 24588560 |
| 8 | 25411435 |
| 9 | 26522546 |
| 10 | 27150160 |
| 11 | 27150161 |
| 12 | 27777775 |
| 13 | 28261271 |
| 14 | 28744768 |
| 15 | 28888885 |
| 16 | 28888886 |
| 17 | 29372382 |
| 18 | 29372383 |
| 19 | 29516500 |
| 20 | 29855879 |
| 21 | 31111109 |
| 22 | 31738723 |
| 23 | 32078101 |
| 24 | 32222218 |
| 25 | 32705716 |
| 26 | 32849833 |
| 27 | 33189212 |
| 28 | 33333331 |