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 | 7 |
| 3 | 41 |
| 4 | 80 |
| 5 | 219 |
| 6 | 313 |
| 7 | 1579 |
| 8 | 4250 |
| 9 | 32327 |
| 10 | 96057 |
| 11 | 203774 |
| 12 | 321975 |
| 13 | 394664 |
| 14 | 1430433 |
| 15 | 5886828 |
| 16 | 9140809 |
| 17 | 35697590 |
| 18 | 101647281 |
| 19 | 453696237 |