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 | 1 |
| 4 | 9 |
| 5 | 1 |
| 6 | 41 |
| 7 | 1 |
| 8 | 65 |
| 9 | 193 |
| 10 | 161 |
| 11 | 1 |
| 12 | 2433 |
| 13 | 1 |
| 14 | 897 |
| 15 | 10241 |
| 16 | 18433 |
| 17 | 1 |
| 18 | 66049 |
| 19 | 1 |
| 20 | 403457 |
| 21 | 344065 |
| 22 | 22529 |
| 23 | 1 |
| 24 | 7127041 |
| 25 | 5242881 |
| 26 | 106497 |
| 27 | 9437185 |
| 28 | 73629697 |
| 29 | 1 |
| 30 | 332890113 |
| 31 | 1 |
| 32 | 940572673 |
| 33 | 230686721 |
| 34 | 2228225 |
| 35 | 9395240961 |
| 36 | 18828754945 |
| 37 | 1 |
| 38 | 9961473 |
| 39 | 5234491393 |
| 40 | 429517701121 |
| 41 | 1 |