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 | 830 |
| 1 | 216 |
| 2 | 144 |
| 3 | 13760 |
| 4 | 396 |
| 5 | 144 |
| 6 | 185348 |
| 7 | 576 |
| 8 | 144 |
| 9 | 3222390 |
| 10 | 756 |
| 11 | 144 |
| 12 | 57614324 |
| 13 | 936 |
| 14 | 144 |
| 15 | 1033400616 |
| 16 | 1116 |
| 17 | 144 |
| 18 | 18543135720 |
| 19 | 1296 |
| 20 | 144 |