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 | 0 |
| 2 | 0 |
| 3 | 2 |
| 4 | 0 |
| 5 | 2 |
| 6 | 3 |
| 7 | 6 |
| 8 | 6 |
| 9 | 9 |
| 10 | 11 |
| 11 | 19 |
| 12 | 28 |
| 13 | 43 |
| 14 | 66 |
| 15 | 98 |
| 16 | 145 |
| 17 | 219 |
| 18 | 327 |
| 19 | 474 |
| 20 | 744 |
| 21 | 1125 |
| 22 | 1673 |
| 23 | 2481 |
| 24 | 3723 |
| 25 | 5600 |
| 26 | 8415 |
| 27 | 12630 |
| 28 | 18863 |
| 29 | 28395 |
| 30 | 42620 |
| 31 | 63907 |