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 | 0 |
| 1 | 2 |
| 2 | 3 |
| 3 | 12 |
| 4 | 131 |
| 5 | 169 |
| 6 | 199 |
| 7 | 279 |
| 8 | 413 |
| 9 | 851 |
| 10 | 2771 |
| 11 | 18514 |
| 12 | 20740 |
| 13 | 20780 |
| 14 | 147756 |
| 15 | 207783 |
| 16 | 312134 |
| 17 | 361393 |
| 18 | 6931243 |