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 | 0 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 1 |
| 6 | 6 |
| 7 | 1 |
| 8 | 33 |
| 9 | 23 |
| 10 | 295 |
| 11 | 1 |
| 12 | 4877 |
| 13 | 1 |
| 14 | 44191 |
| 15 | 141210 |
| 16 | 749316 |
| 17 | 1 |
| 18 | 31762349 |
| 19 | 1 |
| 20 | 309754506 |
| 21 | 3980911205 |
| 22 | 4704612121 |
| 23 | 1 |
| 24 | 1303743206944 |
| 25 | 55279816357 |
| 26 | 2737023412201 |
| 27 | 343866841144704 |
| 28 | 564548508168226 |
| 29 | 1 |
| 30 | 145630899385513158 |
| 31 | 1 |
| 32 | 2359434158555273239 |