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 | 6 |
| 3 | 14 |
| 4 | 34 |
| 5 | 92 |
| 6 | 258 |
| 7 | 722 |
| 8 | 2022 |
| 9 | 5706 |
| 10 | 16232 |
| 11 | 46442 |
| 12 | 133418 |
| 13 | 384550 |
| 14 | 1111614 |
| 15 | 3221582 |
| 16 | 9357450 |
| 17 | 27233148 |
| 18 | 79394646 |
| 19 | 231822854 |
| 20 | 677835636 |
| 21 | 1984435484 |
| 22 | 5816254262 |
| 23 | 17064740572 |
| 24 | 50114985298 |
| 25 | 147303657830 |
| 26 | 433319078074 |