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 | 3 |
| 3 | 4 |
| 4 | 21 |
| 5 | 6 |
| 6 | 216 |
| 7 | 8 |
| 8 | 1289 |
| 9 | 2197 |
| 10 | 8828 |
| 11 | 12 |
| 12 | 142278 |
| 13 | 14 |
| 14 | 526704 |
| 15 | 1672464 |
| 16 | 5246993 |
| 17 | 18 |
| 18 | 76887669 |
| 19 | 20 |
| 20 | 345319966 |
| 21 | 1163085032 |
| 22 | 2147498312 |
| 23 | 24 |
| 24 | 52918480178 |
| 25 | 1220703151 |
| 26 | 137438982060 |
| 27 | 847293392440 |
| 28 | 1374672048414 |
| 29 | 30 |
| 30 | 31838544112466 |
| 31 | 32 |
| 32 | 87962004029473 |