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 | 1 |
| 2 | 4 |
| 3 | 14 |
| 4 | 44 |
| 5 | 128 |
| 6 | 352 |
| 7 | 928 |
| 8 | 2368 |
| 9 | 5888 |
| 10 | 14336 |
| 11 | 34304 |
| 12 | 80896 |
| 13 | 188416 |
| 14 | 434176 |
| 15 | 991232 |
| 16 | 2244608 |
| 17 | 5046272 |
| 18 | 11272192 |
| 19 | 25034752 |
| 20 | 55312384 |
| 21 | 121634816 |
| 22 | 266338304 |
| 23 | 580911104 |
| 24 | 1262485504 |
| 25 | 2734686208 |
| 26 | 5905580032 |
| 27 | 12717129728 |