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 | 2 |
| 2 | 4 |
| 3 | 6 |
| 4 | 4 |
| 5 | 18 |
| 6 | 30 |
| 7 | 22 |
| 8 | 12 |
| 9 | 16 |
| 10 | 30 |
| 11 | 40 |
| 12 | 30 |
| 13 | 888 |
| 14 | 486 |
| 15 | 2056 |
| 16 | 696 |
| 17 | 310 |
| 18 | 718 |
| 19 | 4692 |
| 20 | 1600 |
| 21 | 2788 |
| 22 | 4290 |
| 23 | 4326 |
| 24 | 4150 |
| 25 | 18088 |
| 26 | 22096 |
| 27 | 16342 |
| 28 | 72816 |
| 29 | 181720 |
| 30 | 4200 |
| 31 | 58416 |