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 | 3 |
| 3 | 1 |
| 4 | 3 |
| 5 | 19 |
| 6 | 53 |
| 7 | 103 |
| 8 | 4111 |
| 9 | 78293 |
| 10 | 29401 |
| 11 | 4462987 |
| 12 | 9830941 |
| 13 | 284397779 |