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 | 3 |
| 4 | 4 |
| 5 | 5 |
| 6 | 12 |
| 7 | 21 |
| 8 | 32 |
| 9 | 45 |
| 10 | 120 |
| 11 | 231 |
| 12 | 384 |
| 13 | 585 |
| 14 | 1680 |
| 15 | 3465 |
| 16 | 6144 |
| 17 | 9945 |
| 18 | 30240 |
| 19 | 65835 |
| 20 | 122880 |
| 21 | 208845 |
| 22 | 665280 |
| 23 | 1514205 |
| 24 | 2949120 |
| 25 | 5221125 |
| 26 | 17297280 |
| 27 | 40883535 |
| 28 | 82575360 |
| 29 | 151412625 |
| 30 | 518918400 |
| 31 | 1267389585 |
| 32 | 2642411520 |
| 33 | 4996616625 |