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 | 0 |
| 1 | 16 |
| 2 | 48 |
| 3 | 112 |
| 4 | 240 |
| 5 | 496 |
| 6 | 1008 |
| 7 | 2032 |
| 8 | 4080 |
| 9 | 8176 |
| 10 | 16368 |
| 11 | 32752 |
| 12 | 65520 |
| 13 | 131056 |
| 14 | 262128 |
| 15 | 524272 |
| 16 | 1048560 |
| 17 | 2097136 |
| 18 | 4194288 |
| 19 | 8388592 |
| 20 | 16777200 |
| 21 | 33554416 |
| 22 | 67108848 |
| 23 | 134217712 |
| 24 | 268435440 |