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) |
|---|---|
| 0 | 0 |
| 1 | 511 |
| 2 | 15887 |
| 3 | 16368 |
| 4 | 116275 |
| 5 | 116684 |
| 6 | 129084 |
| 7 | 129475 |
| 8 | 412245 |
| 9 | 412586 |
| 10 | 423002 |
| 11 | 423333 |
| 12 | 494694 |
| 13 | 495001 |
| 14 | 504425 |
| 15 | 504726 |
| 16 | 693418 |
| 17 | 693589 |
| 18 | 699045 |
| 19 | 699226 |
| 20 | 742041 |
| 21 | 742246 |
| 22 | 748694 |
| 23 | 748905 |
| 24 | 843519 |
| 25 | 843520 |
| 26 | 844016 |
| 27 | 844047 |
| 28 | 858316 |