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 | 3 |
| 2 | 9 |
| 3 | 9 |
| 4 | 22 |
| 5 | 81 |
| 6 | 22 |
| 7 | 46 |
| 8 | 484 |
| 9 | 484 |
| 10 | 46 |
| 11 | 86 |
| 12 | 2116 |
| 13 | 6166 |
| 14 | 2116 |
| 15 | 86 |
| 16 | 148 |
| 17 | 7396 |
| 18 | 51136 |
| 19 | 51136 |
| 20 | 7396 |
| 21 | 148 |
| 22 | 239 |
| 23 | 21904 |
| 24 | 310396 |
| 25 | 738482 |
| 26 | 310396 |
| 27 | 21904 |
| 28 | 239 |
| 29 | 367 |
| 30 | 57121 |
| 31 | 1492552 |
| 32 | 7291180 |
| 33 | 7291180 |
| 34 | 1492552 |
| 35 | 57121 |
| 36 | 367 |
| 37 | 541 |
| 38 | 134689 |
| 39 | 5995781 |
| 40 | 54035194 |
| 41 | 111026387 |