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 | 2 |
| 2 | 21 |
| 3 | 20 |
| 4 | 24 |
| 5 | 200 |
| 6 | 216 |
| 7 | 288 |
| 8 | 256 |
| 9 | 2592 |
| 10 | 2304 |
| 11 | 2048 |
| 12 | 20736 |
| 13 | 20480 |
| 14 | 24576 |
| 15 | 204800 |
| 16 | 221184 |
| 17 | 294912 |
| 18 | 262144 |
| 19 | 2654208 |
| 20 | 2359296 |
| 21 | 2097152 |
| 22 | 21233664 |
| 23 | 20971520 |
| 24 | 25165824 |
| 25 | 209715200 |
| 26 | 226492416 |
| 27 | 201326592 |
| 28 | 268435456 |
| 29 | 2013265920 |
| 30 | 2415919104 |