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 | 2 |
| 3 | 3 |
| 4 | 6 |
| 5 | 10 |
| 6 | 16 |
| 7 | 24 |
| 8 | 48 |
| 9 | 84 |
| 10 | 144 |
| 11 | 228 |
| 12 | 420 |
| 13 | 648 |
| 14 | 1080 |
| 15 | 1800 |
| 16 | 3600 |
| 17 | 5760 |
| 18 | 11136 |
| 19 | 16704 |
| 20 | 31104 |
| 21 | 53568 |
| 22 | 90624 |
| 23 | 136896 |
| 24 | 269952 |
| 25 | 515712 |
| 26 | 862080 |
| 27 | 1708800 |
| 28 | 3171840 |
| 29 | 4832640 |
| 30 | 9325440 |
| 31 | 14890752 |
| 32 | 29781504 |
| 33 | 52245504 |
| 34 | 88418304 |
| 35 | 166017024 |
| 36 | 331628544 |
| 37 | 497645568 |
| 38 | 829409280 |