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 | 7 |
| 1 | 14 |
| 2 | 56 |
| 3 | 112 |
| 4 | 448 |
| 5 | 896 |
| 6 | 3584 |
| 7 | 7168 |
| 8 | 28672 |
| 9 | 57344 |
| 10 | 229376 |
| 11 | 458752 |
| 12 | 1835008 |
| 13 | 3670016 |
| 14 | 14680064 |
| 15 | 29360128 |
| 16 | 117440512 |
| 17 | 234881024 |
| 18 | 939524096 |
| 19 | 1879048192 |
| 20 | 7516192768 |
| 21 | 15032385536 |
| 22 | 60129542144 |
| 23 | 120259084288 |
| 24 | 481036337152 |