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 | 1 |
| 1 | 3 |
| 2 | 7 |
| 3 | 52 |
| 4 | 59 |
| 5 | 229 |
| 6 | 975 |
| 7 | 1204 |
| 8 | 2179 |
| 9 | 3383 |
| 10 | 39392 |
| 11 | 42775 |
| 12 | 82167 |
| 13 | 124942 |
| 14 | 581935 |
| 15 | 1870747 |
| 16 | 2452682 |
| 17 | 19039521 |
| 18 | 40531724 |
| 19 | 140634693 |
| 20 | 3415764356 |
| 21 | 10387927761 |
| 22 | 24191619878 |
| 23 | 179729266907 |
| 24 | 203920886785 |
| 25 | 791491927262 |