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 | 9 |
| 2 | 75 |
| 3 | 294 |
| 4 | 810 |
| 5 | 1815 |
| 6 | 3549 |
| 7 | 6300 |
| 8 | 10404 |
| 9 | 16245 |
| 10 | 24255 |
| 11 | 34914 |
| 12 | 48750 |
| 13 | 66339 |
| 14 | 88305 |
| 15 | 115320 |
| 16 | 148104 |
| 17 | 187425 |
| 18 | 234099 |
| 19 | 288990 |
| 20 | 353010 |
| 21 | 427119 |
| 22 | 512325 |
| 23 | 609684 |
| 24 | 720300 |
| 25 | 845325 |
| 26 | 985959 |
| 27 | 1143450 |
| 28 | 1319094 |
| 29 | 1514235 |
| 30 | 1730265 |
| 31 | 1968624 |
| 32 | 2230800 |
| 33 | 2518329 |
| 34 | 2832795 |