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 | 32 |
| 3 | 128 |
| 4 | 512 |
| 5 | 2048 |
| 6 | 8192 |
| 7 | 20736 |
| 8 | 41472 |
| 9 | 82944 |
| 10 | 165888 |
| 11 | 186624 |
| 12 | 373248 |
| 13 | 746496 |
| 14 | 1492992 |
| 15 | 2985984 |
| 16 | 5971968 |
| 17 | 6718464 |
| 18 | 11943936 |
| 19 | 23887872 |
| 20 | 26873856 |
| 21 | 53747712 |
| 22 | 107495424 |
| 23 | 214990848 |
| 24 | 241864704 |
| 25 | 429981696 |
| 26 | 859963392 |
| 27 | 967458816 |
| 28 | 1719926784 |
| 29 | 3439853568 |
| 30 | 3869835264 |
| 31 | 7464960000 |