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 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 5 |
| 6 | 12 |
| 7 | 89 |
| 8 | 1824 |
| 9 | 3024 |
| 10 | 7024 |
| 11 | 15084 |
| 12 | 17184 |
| 13 | 18935 |
| 14 | 22624 |
| 15 | 28657 |
| 16 | 29424 |
| 17 | 31464 |
| 18 | 37024 |
| 19 | 38835 |
| 20 | 40032 |
| 21 | 42679 |
| 22 | 44975 |
| 23 | 47375 |
| 24 | 66744 |
| 25 | 66815 |
| 26 | 78219 |
| 27 | 89495 |
| 28 | 107456 |
| 29 | 112175 |
| 30 | 119744 |
| 31 | 144599 |
| 32 | 148519 |
| 33 | 169883 |
| 34 | 171941 |
| 35 | 172025 |
| 36 | 188208 |
| 37 | 207935 |
| 38 | 226624 |
| 39 | 244404 |
| 40 | 248255 |