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 | 1 |
| 2 | 3 |
| 3 | 5 |
| 4 | 12 |
| 5 | 21 |
| 6 | 33 |
| 7 | 81 |
| 8 | 177 |
| 9 | 338 |
| 10 | 667 |
| 11 | 1178 |
| 12 | 2031 |
| 13 | 4105 |
| 14 | 6872 |
| 15 | 20569 |
| 16 | 42744 |
| 17 | 84457 |
| 18 | 167863 |
| 19 | 315633 |
| 20 | 590081 |
| 21 | 1325032 |
| 22 | 2366125 |
| 23 | 4408350 |
| 24 | 8146016 |
| 25 | 16474904 |
| 26 | 30266484 |
| 27 | 67320433 |
| 28 | 112454976 |
| 29 | 230099960 |
| 30 | 417825921 |
| 31 | 1333610936 |
| 32 | 2714234540 |
| 33 | 5411487988 |
| 34 | 10800172911 |