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 | 1 |
| 1 | 2 |
| 2 | 1 |
| 3 | 11 |
| 4 | 4 |
| 5 | 101 |
| 6 | 29 |
| 7 | 1592 |
| 8 | 263 |
| 9 | 43578 |
| 10 | 4424 |
| 11 | 1972239 |
| 12 | 117557 |
| 13 | 159790891 |
| 14 | 5394252 |
| 15 | 22035879309 |
| 16 | 430235439 |