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 | 6 |
| 1 | 8 |
| 2 | 14 |
| 3 | 32 |
| 4 | 86 |
| 5 | 248 |
| 6 | 734 |
| 7 | 2192 |
| 8 | 6566 |
| 9 | 19688 |
| 10 | 59054 |
| 11 | 177152 |
| 12 | 531446 |
| 13 | 1594328 |
| 14 | 4782974 |
| 15 | 14348912 |
| 16 | 43046726 |
| 17 | 129140168 |
| 18 | 387420494 |
| 19 | 1162261472 |
| 20 | 3486784406 |
| 21 | 10460353208 |
| 22 | 31381059614 |
| 23 | 94143178832 |
| 24 | 282429536486 |
| 25 | 847288609448 |