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 | 3 |
| 2 | 6 |
| 3 | 15 |
| 4 | 24 |
| 5 | 60 |
| 6 | 105 |
| 7 | 255 |
| 8 | 384 |
| 9 | 960 |
| 10 | 1632 |
| 11 | 1680 |
| 12 | 4080 |
| 13 | 15555 |
| 14 | 27030 |
| 15 | 65535 |
| 16 | 98304 |
| 17 | 245760 |
| 18 | 417792 |
| 19 | 430080 |
| 20 | 1044480 |
| 21 | 1582080 |
| 22 | 3947520 |
| 23 | 3982080 |
| 24 | 6908160 |
| 25 | 6919680 |
| 26 | 16776960 |
| 27 | 106991625 |
| 28 | 267448335 |
| 29 | 1019462460 |
| 30 | 1771476585 |
| 31 | 4294967295 |