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 | 3 |
| 3 | 12 |
| 4 | 15 |
| 5 | 72 |
| 6 | 91 |
| 7 | 312 |
| 8 | 255 |
| 9 | 1240 |
| 10 | 1860 |
| 11 | 4123 |
| 12 | 5080 |
| 13 | 26208 |
| 14 | 34200 |
| 15 | 93600 |
| 16 | 65535 |
| 17 | 334368 |
| 18 | 416560 |
| 19 | 1420800 |
| 20 | 1596364 |
| 21 | 6146800 |
| 22 | 5949696 |
| 23 | 20485332 |
| 24 | 23788842 |
| 25 | 120519630 |
| 26 | 194016600 |
| 27 | 358132380 |
| 28 | 458803800 |
| 29 | 1674738000 |
| 30 | 2166798816 |
| 31 | 6045990912 |
| 32 | 4294967295 |
| 33 | 22739738112 |
| 34 | 37862623140 |