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 | 3 |
| 1 | 19 |
| 2 | 31 |
| 3 | 691 |
| 4 | 907 |
| 5 | 2887 |
| 6 | 15943 |
| 7 | 69283 |
| 8 | 216127 |
| 9 | 1108831 |
| 10 | 8344423 |
| 11 | 10976347 |
| 12 | 166965391 |
| 13 | 385465771 |
| 14 | 26580643 |