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 | 3 |
| 3 | 7 |
| 4 | 37 |
| 5 | 71 |
| 6 | 751 |
| 7 | 925 |
| 8 | 13161 |
| 9 | 45676 |
| 10 | 262911 |
| 11 | 184757 |
| 12 | 18014557 |
| 13 | 2704157 |
| 14 | 133062875 |
| 15 | 2838201061 |
| 16 | 16907954129 |
| 17 | 601080391 |
| 18 | 830283170617 |
| 19 | 9075135301 |
| 20 | 87074953375981 |
| 21 | 246003195539410 |
| 22 | 53321730394923 |
| 23 | 2104098963721 |
| 24 | 479275771000215865 |
| 25 | 1952680410445479976 |