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 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 13 |
| 6 | 17 |
| 7 | 1 |
| 8 | 41 |
| 9 | 157 |
| 10 | 1811 |
| 11 | 1579 |
| 12 | 18859 |
| 13 | 95533 |
| 14 | 17659 |
| 15 | 1995293 |
| 16 | 208303 |
| 17 | 2396687 |
| 18 | 58513111 |
| 19 | 299808329 |
| 20 | 2460653813 |
| 21 | 3952306763 |
| 22 | 341777053 |
| 23 | 115405393057 |
| 24 | 437621467859 |
| 25 | 1009861675153 |
| 26 | 6660853109087 |
| 27 | 29075165225531 |