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 | 4 |
| 3 | 14 |
| 4 | 41 |
| 5 | 127 |
| 6 | 386 |
| 7 | 1181 |
| 8 | 3605 |
| 9 | 11013 |
| 10 | 33635 |
| 11 | 102734 |
| 12 | 313780 |
| 13 | 958385 |
| 14 | 2927208 |
| 15 | 8940618 |
| 16 | 27307464 |
| 17 | 83405606 |
| 18 | 254747013 |
| 19 | 778077691 |
| 20 | 2376494562 |
| 21 | 7258563605 |
| 22 | 22169941573 |
| 23 | 67713990833 |
| 24 | 206819875427 |
| 25 | 631693101322 |
| 26 | 1929389878184 |