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 | 5 |
| 2 | 37 |
| 3 | 15 |
| 4 | 1079 |
| 5 | 85 |
| 6 | 8317 |
| 7 | 455 |
| 8 | 30959 |
| 9 | 2313 |
| 10 | 338585 |
| 11 | 11275 |
| 12 | 67124549 |
| 13 | 53261 |
| 14 | 688219 |
| 15 | 245775 |
| 16 | 267391423 |
| 17 | 1114129 |
| 18 | 1882776439 |
| 19 | 4980755 |
| 20 | 3460132789 |
| 21 | 22020117 |
| 22 | 6367811021 |
| 23 | 96469015 |
| 24 | 549385297589 |
| 25 | 419430425 |
| 26 | 5243044651 |
| 27 | 1811939355 |
| 28 | 3245794417411 |
| 29 | 7784628253 |