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 | 50 |
| 2 | 450 |
| 3 | 1970 |
| 4 | 5890 |
| 5 | 14002 |
| 6 | 28610 |
| 7 | 52530 |
| 8 | 89090 |
| 9 | 142130 |
| 10 | 216002 |
| 11 | 315570 |
| 12 | 446210 |
| 13 | 613810 |
| 14 | 824770 |
| 15 | 1086002 |
| 16 | 1404930 |
| 17 | 1789490 |
| 18 | 2248130 |
| 19 | 2789810 |
| 20 | 3424002 |
| 21 | 4160690 |
| 22 | 5010370 |
| 23 | 5984050 |
| 24 | 7093250 |
| 25 | 8350002 |