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) |
|---|---|
| 2 | 1 |
| 3 | 3 |
| 4 | 4 |
| 5 | 15 |
| 6 | 18 |
| 7 | 63 |
| 8 | 64 |
| 9 | 216 |
| 10 | 300 |
| 11 | 968 |
| 12 | 864 |
| 13 | 4095 |
| 14 | 5292 |
| 15 | 13500 |
| 16 | 16384 |
| 17 | 65535 |
| 18 | 69984 |
| 19 | 262143 |
| 20 | 240000 |
| 21 | 889056 |
| 22 | 1320352 |
| 23 | 4105040 |
| 24 | 3317760 |
| 25 | 16200000 |
| 26 | 22358700 |
| 27 | 56733696 |
| 28 | 66382848 |
| 29 | 266913216 |
| 30 | 267300000 |
| 31 | 1073741823 |
| 32 | 1073741824 |