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 | 3 |
| 3 | 7 |
| 4 | 43 |
| 5 | 29 |
| 6 | 157 |
| 7 | 907 |
| 8 | 2351 |
| 9 | 5179 |
| 10 | 2089 |
| 11 | 375607 |
| 12 | 262897 |
| 13 | 725663 |
| 14 | 36850999 |
| 15 | 173471351 |
| 16 | 198793279 |
| 17 | 4827507229 |
| 18 | 17010526363 |
| 19 | 83547839407 |
| 20 | 572945039351 |
| 21 | 6269243827111 |