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 | 1 |
| 3 | 11 |
| 4 | 76 |
| 5 | 340 |
| 6 | 1135 |
| 7 | 3101 |
| 8 | 7336 |
| 9 | 15576 |
| 10 | 30405 |
| 11 | 55495 |
| 12 | 95876 |
| 13 | 158236 |
| 14 | 251251 |
| 15 | 385945 |
| 16 | 576080 |
| 17 | 838576 |
| 18 | 1193961 |
| 19 | 1666851 |
| 20 | 2286460 |
| 21 | 3087140 |
| 22 | 4108951 |
| 23 | 5398261 |
| 24 | 7008376 |
| 25 | 9000200 |
| 26 | 11442925 |
| 27 | 14414751 |
| 28 | 18003636 |
| 29 | 22308076 |
| 30 | 27437915 |
| 31 | 33515185 |
| 32 | 40674976 |
| 33 | 49066336 |