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 | 0 |
| 1 | 6 |
| 2 | 60 |
| 3 | 126 |
| 4 | 120 |
| 5 | 330 |
| 6 | 16380 |
| 7 | 42 |
| 8 | 4080 |
| 9 | 7182 |
| 10 | 3300 |
| 11 | 1518 |
| 12 | 32760 |
| 13 | 78 |
| 14 | 12180 |
| 15 | 214830 |
| 16 | 8160 |
| 17 | 102 |
| 18 | 34545420 |
| 19 | 114 |
| 20 | 270600 |
| 21 | 37926 |
| 22 | 15180 |
| 23 | 6486 |
| 24 | 1113840 |
| 25 | 1650 |
| 26 | 41340 |
| 27 | 21546 |
| 28 | 24360 |
| 29 | 10266 |
| 30 | 1703601900 |
| 31 | 186 |
| 32 | 16320 |
| 33 | 2135826 |
| 34 | 1020 |
| 35 | 164010 |
| 36 | 5043631320 |
| 37 | 222 |
| 38 | 1140 |