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 | 57 |
| 3 | 237 |
| 4 | 677 |
| 5 | 1557 |
| 6 | 3105 |
| 7 | 5597 |
| 8 | 9357 |
| 9 | 14757 |
| 10 | 22217 |
| 11 | 32205 |
| 12 | 45237 |
| 13 | 61877 |
| 14 | 82737 |
| 15 | 108477 |
| 16 | 139805 |
| 17 | 177477 |
| 18 | 222297 |
| 19 | 275117 |
| 20 | 336837 |
| 21 | 408405 |
| 22 | 490817 |
| 23 | 585117 |
| 24 | 692397 |
| 25 | 813797 |
| 26 | 950505 |
| 27 | 1103757 |
| 28 | 1274837 |
| 29 | 1465077 |
| 30 | 1675857 |