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 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 10 |
| 5 | 20 |
| 6 | 56 |
| 7 | 117 |
| 8 | 323 |
| 9 | 745 |
| 10 | 1896 |
| 11 | 4242 |
| 12 | 12883 |
| 13 | 29108 |
| 14 | 75725 |
| 15 | 183366 |
| 16 | 504215 |
| 17 | 1176776 |