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 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 0 |
| 9 | 0 |
| 10 | 1 |
| 11 | 1 |
| 12 | 5 |
| 13 | 8 |
| 14 | 22 |
| 15 | 47 |
| 16 | 103 |
| 17 | 234 |
| 18 | 490 |
| 19 | 1078 |
| 20 | 2261 |
| 21 | 4844 |
| 22 | 10294 |
| 23 | 21659 |
| 24 | 45609 |
| 25 | 95580 |
| 26 | 200422 |
| 27 | 417715 |
| 28 | 871452 |
| 29 | 1811412 |
| 30 | 3761623 |
| 31 | 7798409 |
| 32 | 16142081 |
| 33 | 33373093 |
| 34 | 68906782 |
| 35 | 142120436 |
| 36 | 292797806 |
| 37 | 602653984 |
| 38 | 1239225631 |