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 | 1 |
| 1 | 5 |
| 2 | 9 |
| 3 | 16 |
| 4 | 25 |
| 5 | 43 |
| 6 | 91 |
| 7 | 105 |
| 8 | 427 |
| 9 | 463 |
| 10 | 484 |
| 11 | 4085 |
| 12 | 4306 |
| 13 | 4413 |
| 14 | 5583 |
| 15 | 6273 |
| 16 | 10172 |
| 17 | 18105 |
| 18 | 24946 |
| 19 | 31686 |
| 20 | 31886 |