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 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 4 |
| 6 | 4 |
| 7 | 12 |
| 8 | 12 |
| 9 | 16 |
| 10 | 40 |
| 11 | 88 |
| 12 | 48 |
| 13 | 232 |
| 14 | 336 |
| 15 | 240 |
| 16 | 552 |
| 17 | 1596 |
| 18 | 1152 |
| 19 | 4032 |
| 20 | 3200 |
| 21 | 5040 |
| 22 | 17424 |
| 23 | 28656 |
| 24 | 12672 |
| 25 | 60000 |
| 26 | 120640 |
| 27 | 89856 |
| 28 | 188160 |
| 29 | 514228 |
| 30 | 288000 |
| 31 | 1343296 |
| 32 | 1217712 |
| 33 | 1742400 |
| 34 | 5697720 |
| 35 | 6814080 |
| 36 | 4396032 |
| 37 | 23656320 |
| 38 | 37691136 |