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 | 1 |
| 2 | 5 |
| 3 | 7 |
| 4 | 12 |
| 5 | 800 |
| 6 | 1502 |
| 7 | 3021 |
| 8 | 5079 |
| 9 | 6325 |
| 10 | 17537 |
| 11 | 50021 |
| 12 | 158855 |
| 13 | 826545 |
| 14 | 5023575 |
| 15 | 5097327 |
| 16 | 6369490 |
| 17 | 17535161 |
| 18 | 19462254 |
| 19 | 22535278 |
| 20 | 24898987 |
| 21 | 55666978 |
| 22 | 111142756 |
| 23 | 305716101 |
| 24 | 2653533055 |
| 25 | 3591521863 |
| 26 | 4889613852 |
| 27 | 10577043282 |