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 | 2 |
| 3 | 1 |
| 4 | 5 |
| 5 | 7 |
| 6 | 1 |
| 7 | 17 |
| 8 | 27 |
| 9 | 31 |
| 10 | 1 |
| 11 | 69 |
| 12 | 130 |
| 13 | 164 |
| 14 | 174 |
| 15 | 1 |
| 16 | 373 |
| 17 | 729 |
| 18 | 1020 |
| 19 | 1158 |
| 20 | 1194 |
| 21 | 1 |
| 22 | 2491 |
| 23 | 4961 |
| 24 | 7166 |
| 25 | 8798 |
| 26 | 9544 |
| 27 | 9729 |
| 28 | 1 |
| 29 | 20020 |
| 30 | 39995 |
| 31 | 58711 |
| 32 | 74202 |
| 33 | 85318 |
| 34 | 90300 |
| 35 | 91531 |
| 36 | 1 |
| 37 | 186814 |
| 38 | 373549 |
| 39 | 552245 |
| 40 | 709994 |
| 41 | 836961 |
| 42 | 926680 |
| 43 | 966720 |