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 | 3 |
| 1 | 5 |
| 2 | 11 |
| 3 | 19 |
| 4 | 30 |
| 5 | 106 |
| 6 | 193 |
| 7 | 299 |
| 8 | 1457 |
| 9 | 2721 |
| 10 | 4178 |
| 11 | 25946 |
| 12 | 49171 |
| 13 | 75117 |
| 14 | 566827 |
| 15 | 1084483 |
| 16 | 1651310 |
| 17 | 14665106 |
| 18 | 28245729 |
| 19 | 42910835 |
| 20 | 438351041 |
| 21 | 848456353 |
| 22 | 1286807394 |
| 23 | 14862109042 |
| 24 | 28875761731 |
| 25 | 43737870773 |
| 26 | 563501581931 |
| 27 | 1098127402131 |
| 28 | 1661628984062 |