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 | 3 |
| 3 | 7 |
| 4 | 14 |
| 5 | 28 |
| 6 | 51 |
| 7 | 100 |
| 8 | 182 |
| 9 | 351 |
| 10 | 661 |
| 11 | 1287 |
| 12 | 2426 |
| 13 | 4826 |
| 14 | 9275 |
| 15 | 18314 |
| 16 | 35768 |
| 17 | 71173 |
| 18 | 139347 |
| 19 | 278251 |
| 20 | 548228 |
| 21 | 1094162 |
| 22 | 2167513 |
| 23 | 4328818 |
| 24 | 8587276 |
| 25 | 17173303 |
| 26 | 34149019 |
| 27 | 68256259 |
| 28 | 135967174 |
| 29 | 271862798 |
| 30 | 541976151 |
| 31 | 1083918878 |