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) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 5 |
| 5 | 12 |
| 6 | 23 |
| 7 | 54 |
| 8 | 118 |
| 9 | 258 |
| 10 | 550 |
| 11 | 1178 |
| 12 | 2540 |
| 13 | 5394 |
| 14 | 11473 |
| 15 | 24174 |
| 16 | 51021 |
| 17 | 107210 |
| 18 | 225099 |
| 19 | 471322 |
| 20 | 985202 |
| 21 | 2055542 |
| 22 | 4281847 |
| 23 | 8906676 |
| 24 | 18500425 |
| 25 | 38379246 |
| 26 | 79516158 |
| 27 | 164561560 |
| 28 | 340179441 |
| 29 | 702506576 |
| 30 | 1449311429 |
| 31 | 2987297778 |
| 32 | 6151964642 |
| 33 | 12658841766 |
| 34 | 26027603925 |