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 | 0 |
| 2 | 1 |
| 3 | 3 |
| 4 | 6 |
| 5 | 14 |
| 6 | 15 |
| 7 | 26 |
| 8 | 68 |
| 9 | 75 |
| 10 | 129 |
| 11 | 158 |
| 12 | 186 |
| 13 | 249 |
| 14 | 759 |
| 15 | 1616 |
| 16 | 1827 |
| 17 | 2268 |
| 18 | 2679 |
| 19 | 4543 |
| 20 | 6072 |
| 21 | 6675 |
| 22 | 7294 |
| 23 | 13512 |
| 24 | 16146 |
| 25 | 27871 |
| 26 | 112640 |
| 27 | 116339 |
| 28 | 152889 |
| 29 | 161727 |
| 30 | 239533 |
| 31 | 260487 |
| 32 | 404161 |
| 33 | 670038 |
| 34 | 685744 |
| 35 | 767718 |
| 36 | 973504 |
| 37 | 2313206 |
| 38 | 6250177 |
| 39 | 6977617 |