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 | 7 |
| 5 | 8 |
| 6 | 14 |
| 7 | 20 |
| 8 | 110 |
| 9 | 138 |
| 10 | 140 |
| 11 | 145 |
| 12 | 300 |
| 13 | 390 |
| 14 | 1484 |
| 15 | 3194 |
| 16 | 3300 |
| 17 | 3950 |
| 18 | 4986 |
| 19 | 5574 |
| 20 | 5630 |
| 21 | 5874 |
| 22 | 8866 |
| 23 | 11390 |
| 24 | 45130 |
| 25 | 86110 |