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 | 2 |
| 1 | 2 |
| 2 | 5 |
| 3 | 7 |
| 4 | 41 |
| 5 | 61 |
| 6 | 73 |
| 7 | 547 |
| 8 | 193 |
| 9 | 37 |
| 10 | 1181 |
| 11 | 661 |
| 12 | 6481 |
| 13 | 398581 |
| 14 | 16493 |
| 15 | 271 |
| 16 | 21523361 |
| 17 | 1021 |
| 18 | 530713 |
| 19 | 101917 |
| 20 | 42521761 |
| 21 | 2269 |
| 22 | 570461 |
| 23 | 23535794707 |
| 24 | 769 |
| 25 | 22996651 |
| 26 | 4795973261 |
| 27 | 19927 |
| 28 | 647753 |
| 29 | 5385997 |
| 30 | 47763361 |
| 31 | 22434744889 |
| 32 | 926510094425921 |