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 | 3 |
| 2 | 1 |
| 3 | 12 |
| 4 | 6 |
| 5 | 1 |
| 6 | 63 |
| 7 | 39 |
| 8 | 9 |
| 9 | 1 |
| 10 | 421 |
| 11 | 300 |
| 12 | 81 |
| 13 | 12 |
| 14 | 1 |
| 15 | 3472 |
| 16 | 2741 |
| 17 | 816 |
| 18 | 138 |
| 19 | 15 |
| 20 | 1 |
| 21 | 34380 |
| 22 | 29380 |
| 23 | 9366 |
| 24 | 1716 |
| 25 | 210 |
| 26 | 18 |
| 27 | 1 |
| 28 | 399463 |
| 29 | 363922 |
| 30 | 122148 |
| 31 | 23647 |
| 32 | 3105 |
| 33 | 297 |
| 34 | 21 |
| 35 | 1 |
| 36 | 5344770 |
| 37 | 5135894 |
| 38 | 1795481 |
| 39 | 362116 |
| 40 | 49880 |
| 41 | 5088 |
| 42 | 399 |
| 43 | 24 |
| 44 | 1 |
| 45 | 81097517 |
| 46 | 81557270 |