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 | 8 |
| 3 | 36 |
| 4 | 128 |
| 5 | 600 |
| 6 | 1728 |
| 7 | 10584 |
| 8 | 32768 |
| 9 | 139968 |
| 10 | 480000 |
| 11 | 2640704 |
| 12 | 6635520 |
| 13 | 44717400 |
| 14 | 132765696 |
| 15 | 534600000 |
| 16 | 2147483648 |
| 17 | 11452896600 |
| 18 | 26121388032 |
| 19 | 183250539864 |
| 20 | 473702400000 |
| 21 | 2427720325632 |
| 22 | 8834232287232 |
| 23 | 45914084232320 |
| 24 | 109586090557440 |
| 25 | 656100000000000 |