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 | 45 |
| 3 | 54 |
| 4 | 2025 |
| 5 | 72 |
| 6 | 2430 |
| 7 | 90 |
| 8 | 91125 |
| 9 | 2916 |
| 10 | 3240 |
| 11 | 126 |
| 12 | 109350 |
| 13 | 144 |
| 14 | 4050 |
| 15 | 3888 |
| 16 | 4100625 |
| 17 | 180 |
| 18 | 131220 |
| 19 | 198 |
| 20 | 145800 |
| 21 | 4860 |
| 22 | 5670 |
| 23 | 234 |
| 24 | 4920750 |
| 25 | 5184 |
| 26 | 6480 |
| 27 | 157464 |
| 28 | 182250 |
| 29 | 288 |
| 30 | 174960 |
| 31 | 306 |
| 32 | 184528125 |
| 33 | 6804 |
| 34 | 8100 |
| 35 | 6480 |
| 36 | 5904900 |
| 37 | 360 |
| 38 | 8910 |
| 39 | 7776 |
| 40 | 6561000 |
| 41 | 396 |
| 42 | 218700 |