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 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 1 |
| 8 | 1 |
| 9 | 7 |
| 10 | 22 |
| 11 | 48 |
| 12 | 93 |
| 13 | 180 |
| 14 | 331 |
| 15 | 575 |
| 16 | 1150 |
| 17 | 3578 |
| 18 | 13268 |
| 19 | 50808 |
| 20 | 217173 |
| 21 | 881980 |
| 22 | 3064454 |
| 23 | 9169075 |
| 24 | 24605669 |
| 25 | 61450068 |
| 26 | 147038896 |
| 27 | 347902716 |
| 28 | 860591396 |
| 29 | 2411664484 |
| 30 | 8038395295 |
| 31 | 30845855094 |
| 32 | 126173520602 |
| 33 | 513951305502 |
| 34 | 1996531969713 |