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 | 1 |
| 3 | 2 |
| 4 | 1 |
| 5 | 4 |
| 6 | 20 |
| 7 | 1 |
| 8 | 8 |
| 9 | 104 |
| 10 | 1504 |
| 11 | 1 |
| 12 | 16 |
| 13 | 544 |
| 14 | 22208 |
| 15 | 948032 |
| 16 | 1 |
| 17 | 32 |
| 18 | 2848 |
| 19 | 329216 |
| 20 | 40930304 |
| 21 | 5204262912 |
| 22 | 1 |
| 23 | 64 |
| 24 | 14912 |
| 25 | 4883968 |
| 26 | 1772261888 |
| 27 | 666548862976 |
| 28 | 254112496082944 |
| 29 | 1 |
| 30 | 128 |
| 31 | 78080 |
| 32 | 72464384 |
| 33 | 76795762688 |
| 34 | 85575149027328 |
| 35 | 97392800416399360 |
| 36 | 111879597850371293184 |