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 | 16718 |
| 1 | 1559 |
| 2 | 3020 |
| 3 | 588 |
| 4 | 314 |
| 5 | 188 |
| 6 | 186 |
| 7 | 59 |
| 8 | 48 |
| 9 | 41 |
| 10 | 21 |
| 11 | 13 |
| 12 | 11 |
| 13 | 19 |
| 14 | 5 |
| 15 | 8 |
| 16 | 2 |
| 17 | 4 |
| 18 | 1228537713709 |
| 19 | 14688670051164208 |
| 20 | 203860951641372730864 |
| 21 | 1 |