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 | 1 |
| 2 | 2 |
| 3 | 6 |
| 4 | 14 |
| 5 | 33 |
| 6 | 77 |
| 7 | 174 |
| 8 | 389 |
| 9 | 860 |
| 10 | 1885 |
| 11 | 4098 |
| 12 | 8853 |
| 13 | 19020 |
| 14 | 40668 |
| 15 | 86593 |
| 16 | 183698 |
| 17 | 388421 |
| 18 | 818892 |
| 19 | 1721884 |
| 20 | 3611968 |
| 21 | 7560337 |
| 22 | 15793474 |
| 23 | 32932549 |
| 24 | 68556300 |
| 25 | 142495004 |
| 26 | 295754816 |
| 27 | 613039248 |
| 28 | 1269137729 |
| 29 | 2624393922 |
| 30 | 5421024773 |
| 31 | 11186523404 |
| 32 | 23061994524 |