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 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 4 |
| 6 | 7 |
| 7 | 13 |
| 8 | 24 |
| 9 | 46 |
| 10 | 91 |
| 11 | 182 |
| 12 | 375 |
| 13 | 788 |
| 14 | 1672 |
| 15 | 3612 |
| 16 | 7991 |
| 17 | 18062 |
| 18 | 41100 |
| 19 | 95294 |
| 20 | 223520 |
| 21 | 527208 |
| 22 | 1263303 |
| 23 | 3057195 |
| 24 | 7502417 |
| 25 | 18730768 |
| 26 | 47143287 |
| 27 | 119120718 |
| 28 | 303294169 |
| 29 | 775085050 |
| 30 | 1995101748 |
| 31 | 5256852524 |
| 32 | 13937345067 |
| 33 | 37284143091 |