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 | 8 |
| 2 | 16 |
| 3 | 48 |
| 4 | 144 |
| 5 | 432 |
| 6 | 1296 |
| 7 | 3888 |
| 8 | 11664 |
| 9 | 34992 |
| 10 | 104976 |
| 11 | 314928 |
| 12 | 944784 |
| 13 | 2834352 |
| 14 | 8503056 |
| 15 | 25509168 |
| 16 | 76527504 |
| 17 | 229582512 |
| 18 | 688747536 |
| 19 | 2066242608 |
| 20 | 6198727824 |
| 21 | 18596183472 |
| 22 | 55788550416 |
| 23 | 167365651248 |
| 24 | 502096953744 |
| 25 | 1506290861232 |