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 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 17 |
| 5 | 1 |
| 6 | 1 |
| 7 | 273 |
| 8 | 273 |
| 9 | 1 |
| 10 | 1 |
| 11 | 4369 |
| 12 | 70161 |
| 13 | 4369 |
| 14 | 1 |
| 15 | 1 |
| 16 | 69905 |
| 17 | 17965585 |
| 18 | 17965585 |
| 19 | 69905 |
| 20 | 1 |
| 21 | 1 |
| 22 | 1118481 |
| 23 | 4599259665 |
| 24 | 73605001745 |
| 25 | 4599259665 |
| 26 | 1118481 |
| 27 | 1 |
| 28 | 1 |
| 29 | 17895697 |
| 30 | 1177411592721 |
| 31 | 301490686407185 |
| 32 | 301490686407185 |