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 | 2 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 11 |
| 6 | 11 |
| 7 | 12 |
| 8 | 12 |
| 9 | 79 |
| 10 | 79 |
| 11 | 347 |
| 12 | 347 |
| 13 | 5541 |
| 14 | 5541 |
| 15 | -9206 |
| 16 | -9206 |
| 17 | 3307613 |
| 18 | 3307613 |
| 19 | -78393123 |
| 20 | -78393123 |
| 21 | 932396477 |
| 22 | 932396477 |
| 23 | -127419293864 |
| 24 | -127419293864 |
| 25 | 6013748071263 |
| 26 | 6013748071263 |