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 | 4 |
| 2 | 12 |
| 3 | 31 |
| 4 | 62 |
| 5 | 133 |
| 6 | 224 |
| 7 | 377 |
| 8 | 558 |
| 9 | 865 |
| 10 | 1304 |
| 11 | 1805 |
| 12 | 2462 |
| 13 | 3337 |
| 14 | 4280 |
| 15 | 5389 |
| 16 | 6726 |
| 17 | 8449 |
| 18 | 10264 |
| 19 | 12663 |
| 20 | 15294 |
| 21 | 18061 |
| 22 | 21200 |
| 23 | 24961 |
| 24 | 29166 |
| 25 | 34173 |
| 26 | 39508 |
| 27 | 45017 |
| 28 | 50870 |
| 29 | 57141 |
| 30 | 63788 |
| 31 | 72299 |
| 32 | 81234 |
| 33 | 91365 |
| 34 | 101732 |
| 35 | 113327 |
| 36 | 125166 |
| 37 | 138355 |
| 38 | 152348 |
| 39 | 167179 |
| 40 | 182862 |