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 | 2 |
| 3 | 13 |
| 4 | 89 |
| 5 | 307 |
| 6 | 283 |
| 7 | 4039 |
| 8 | 761 |
| 9 | 5639 |
| 10 | 16189 |
| 11 | 17125 |
| 12 | 10396 |
| 13 | 54437 |
| 14 | 52862 |
| 15 | 54227 |
| 16 | 847157 |
| 17 | 9646327 |
| 18 | 9474727 |
| 19 | 361375699 |
| 20 | 355820149 |
| 21 | 27844153 |
| 22 | 27355753 |
| 23 | 28039513 |
| 24 | 27731821 |
| 25 | 366667513 |
| 26 | 72266837 |
| 27 | 219763471 |
| 28 | 217455781 |
| 29 | 4211659759 |
| 30 | 835576403 |
| 31 | 51882159671 |
| 32 | 25692722941 |