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 | 171 |
| 2 | 3581 |
| 3 | 23651 |
| 4 | 80191 |
| 5 | 213041 |
| 6 | 444251 |
| 7 | 862711 |
| 8 | 1481141 |
| 9 | 2413721 |
| 10 | 3701951 |
| 11 | 5493891 |
| 12 | 7765621 |
| 13 | 10833601 |
| 14 | 14589491 |
| 15 | 19315751 |
| 16 | 25064491 |
| 17 | 32107771 |
| 18 | 40337021 |
| 19 | 50328771 |
| 20 | 61790891 |
| 21 | 75318371 |