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 | 2 |
| 4 | 2 |
| 5 | 3 |
| 6 | 6 |
| 7 | 6 |
| 8 | 7 |
| 9 | 11 |
| 10 | 24 |
| 11 | 24 |
| 12 | 25 |
| 13 | 29 |
| 14 | 47 |
| 15 | 120 |
| 16 | 120 |
| 17 | 121 |
| 18 | 125 |
| 19 | 143 |
| 20 | 239 |
| 21 | 720 |
| 22 | 720 |
| 23 | 721 |
| 24 | 725 |
| 25 | 743 |
| 26 | 839 |
| 27 | 1439 |
| 28 | 5040 |
| 29 | 5040 |
| 30 | 5041 |
| 31 | 5045 |
| 32 | 5063 |
| 33 | 5159 |
| 34 | 5759 |
| 35 | 10079 |
| 36 | 40320 |
| 37 | 40320 |
| 38 | 40321 |
| 39 | 40325 |
| 40 | 40343 |
| 41 | 40439 |
| 42 | 41039 |
| 43 | 45359 |
| 44 | 80639 |
| 45 | 362880 |
| 46 | 362880 |
| 47 | 362881 |
| 48 | 362885 |
| 49 | 362903 |
| 50 | 362999 |
| 51 | 363599 |
| 52 | 367919 |
| 53 | 403199 |
| 54 | 725759 |