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) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 3 |
| 4 | 6 |
| 5 | 13 |
| 6 | 28 |
| 7 | 39 |
| 8 | 78 |
| 9 | 138 |
| 10 | 207 |
| 11 | 437 |
| 12 | 865 |
| 13 | 1423 |
| 14 | 2750 |
| 15 | 4904 |
| 16 | 8861 |
| 17 | 16201 |
| 18 | 33346 |
| 19 | 58534 |
| 20 | 111878 |
| 21 | 208914 |
| 22 | 397522 |