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 | 1 |
| 4 | 3 |
| 5 | 6 |
| 6 | 16 |
| 7 | 43 |
| 8 | 110 |
| 9 | 284 |
| 10 | 733 |
| 11 | 1886 |
| 12 | 4853 |
| 13 | 12486 |
| 14 | 32121 |
| 15 | 82647 |
| 16 | 212699 |
| 17 | 547552 |
| 18 | 1410023 |
| 19 | 3632260 |
| 20 | 9360140 |
| 21 | 24129284 |
| 22 | 62224692 |
| 23 | 160522287 |
| 24 | 414246823 |
| 25 | 1069376386 |
| 26 | 2761502201 |
| 27 | 7133442743 |
| 28 | 18432633823 |
| 29 | 47643696626 |
| 30 | 123182434292 |
| 31 | 318575889057 |
| 32 | 824125660356 |