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 | 2 |
| 4 | 4 |
| 5 | 4 |
| 6 | 6 |
| 7 | 30 |
| 8 | 58 |
| 9 | 76 |
| 10 | 196 |
| 11 | 528 |
| 12 | 1010 |
| 13 | 1860 |
| 14 | 4470 |
| 15 | 10416 |
| 16 | 20762 |
| 17 | 43272 |
| 18 | 99568 |
| 19 | 219198 |
| 20 | 457862 |
| 21 | 993192 |
| 22 | 2221840 |
| 23 | 4833382 |
| 24 | 10372864 |
| 25 | 22752468 |
| 26 | 50238288 |
| 27 | 109413330 |
| 28 | 238079388 |
| 29 | 523375136 |
| 30 | 1150530568 |
| 31 | 2515127392 |
| 32 | 5508368758 |