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 | 0 |
| 3 | 1 |
| 4 | 2 |
| 5 | 3 |
| 6 | 6 |
| 7 | 9 |
| 8 | 15 |
| 9 | 22 |
| 10 | 33 |
| 11 | 46 |
| 12 | 66 |
| 13 | 89 |
| 14 | 122 |
| 15 | 162 |
| 16 | 216 |
| 17 | 281 |
| 18 | 368 |
| 19 | 472 |
| 20 | 608 |
| 21 | 772 |
| 22 | 981 |
| 23 | 1233 |
| 24 | 1552 |
| 25 | 1934 |
| 26 | 2411 |
| 27 | 2984 |
| 28 | 3691 |
| 29 | 4537 |
| 30 | 5575 |