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 | 3 |
| 1 | 5 |
| 2 | 8 |
| 3 | 12 |
| 4 | 18 |
| 5 | 27 |
| 6 | 40 |
| 7 | 59 |
| 8 | 87 |
| 9 | 128 |
| 10 | 188 |
| 11 | 276 |
| 12 | 405 |
| 13 | 594 |
| 14 | 871 |
| 15 | 1277 |
| 16 | 1872 |
| 17 | 2744 |
| 18 | 4022 |
| 19 | 5895 |
| 20 | 8640 |
| 21 | 12663 |
| 22 | 18559 |
| 23 | 27200 |
| 24 | 39864 |
| 25 | 58424 |
| 26 | 85625 |
| 27 | 125490 |
| 28 | 183915 |
| 29 | 269541 |
| 30 | 395032 |
| 31 | 578948 |
| 32 | 848490 |
| 33 | 1243523 |
| 34 | 1822472 |
| 35 | 2670963 |
| 36 | 3914487 |
| 37 | 5736960 |
| 38 | 8407924 |
| 39 | 12322412 |
| 40 | 18059373 |