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 | 1 |
| 1 | 1 |
| 2 | 4 |
| 3 | 5 |
| 4 | 94 |
| 5 | 99 |
| 6 | 391 |
| 7 | 490 |
| 8 | 9211 |
| 9 | 9701 |
| 10 | 38314 |
| 11 | 48015 |
| 12 | 902584 |
| 13 | 950599 |
| 14 | 3754381 |
| 15 | 4704980 |
| 16 | 88444021 |
| 17 | 93149001 |
| 18 | 367891024 |
| 19 | 461040025 |
| 20 | 8666611474 |
| 21 | 9127651499 |
| 22 | 36049565971 |
| 23 | 45177217470 |
| 24 | 849239480431 |
| 25 | 894416697901 |
| 26 | 3532489574134 |
| 27 | 4426906272035 |
| 28 | 83216802470764 |