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 | 1 |
| 2 | 5 |
| 3 | 7 |
| 4 | 41 |
| 5 | 61 |
| 6 | 365 |
| 7 | 547 |
| 8 | 3281 |
| 9 | 4921 |
| 10 | 29525 |
| 11 | 44287 |
| 12 | 265721 |
| 13 | 398581 |
| 14 | 2391485 |
| 15 | 3587227 |
| 16 | 21523361 |
| 17 | 32285041 |
| 18 | 193710245 |
| 19 | 290565367 |
| 20 | 1743392201 |
| 21 | 2615088301 |
| 22 | 15690529805 |
| 23 | 23535794707 |
| 24 | 141214768241 |
| 25 | 211822152361 |
| 26 | 1270932914165 |