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 | 2 |
| 1 | 3 |
| 2 | 8 |
| 3 | 11 |
| 4 | 19 |
| 5 | 87 |
| 6 | 106 |
| 7 | 193 |
| 8 | 1264 |
| 9 | 1457 |
| 10 | 2721 |
| 11 | 23225 |
| 12 | 25946 |
| 13 | 49171 |
| 14 | 517656 |
| 15 | 566827 |
| 16 | 1084483 |
| 17 | 13580623 |
| 18 | 14665106 |
| 19 | 28245729 |
| 20 | 410105312 |
| 21 | 438351041 |
| 22 | 848456353 |
| 23 | 14013652689 |
| 24 | 14862109042 |
| 25 | 28875761731 |
| 26 | 534625820200 |
| 27 | 563501581931 |
| 28 | 1098127402131 |
| 29 | 22526049624551 |