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 | 1 |
| 7 | 3 |
| 8 | 8 |
| 9 | 28 |
| 10 | 74 |
| 11 | 188 |
| 12 | 468 |
| 13 | 1120 |
| 14 | 2596 |
| 15 | 5944 |
| 16 | 13324 |
| 17 | 29437 |
| 18 | 64288 |
| 19 | 138929 |
| 20 | 297442 |
| 21 | 632074 |
| 22 | 1333897 |
| 23 | 2798352 |
| 24 | 5840164 |
| 25 | 12132638 |
| 26 | 25102232 |
| 27 | 51750419 |
| 28 | 106346704 |
| 29 | 217921161 |
| 30 | 445424102 |
| 31 | 908376235 |
| 32 | 1848753273 |
| 33 | 3755839591 |
| 34 | 7617835520 |
| 35 | 15428584567 |
| 36 | 31207263000 |