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 | 4 |
| 2 | 10 |
| 3 | 39 |
| 4 | 185 |
| 5 | 417 |
| 6 | 589 |
| 7 | 8351 |
| 8 | 40181 |
| 9 | 50809 |
| 10 | 69195 |
| 11 | 2614377 |
| 12 | 4044299 |
| 13 | 27691722 |
| 14 | 110046335 |
| 15 | 473061053 |