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 | 9 |
| 1 | 23 |
| 2 | 83 |
| 3 | 431 |
| 4 | 3001 |
| 5 | 27457 |
| 6 | 10626 |
| 7 | 112087 |
| 8 | 87306 |
| 9 | 172810 |
| 10 | 280217 |
| 11 | 390133 |
| 12 | 353555 |
| 13 | 750243 |
| 14 | 1318106 |
| 15 | 937023 |
| 16 | 367542 |
| 17 | 2615090 |
| 18 | 3434663 |
| 19 | 3281065 |
| 20 | 3270774 |
| 21 | 4979697 |
| 22 | 8021665 |
| 23 | 4627825 |
| 24 | 5618666 |
| 25 | 11169397 |