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) |
|---|---|
| 1 | 9 |
| 2 | 63 |
| 3 | 222 |
| 4 | 570 |
| 5 | 1215 |
| 6 | 2289 |
| 7 | 3948 |
| 8 | 6372 |
| 9 | 9765 |
| 10 | 14355 |
| 11 | 20394 |
| 12 | 28158 |
| 13 | 37947 |
| 14 | 50085 |
| 15 | 64920 |
| 16 | 82824 |
| 17 | 104193 |
| 18 | 129447 |
| 19 | 159030 |
| 20 | 193410 |
| 21 | 233079 |
| 22 | 278553 |
| 23 | 330372 |
| 24 | 389100 |
| 25 | 455325 |
| 26 | 529659 |
| 27 | 612738 |
| 28 | 705222 |
| 29 | 807795 |
| 30 | 921165 |
| 31 | 1046064 |
| 32 | 1183248 |
| 33 | 1333497 |