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 | 72 |
| 3 | 189 |
| 4 | 360 |
| 5 | 585 |
| 6 | 864 |
| 7 | 1197 |
| 8 | 1584 |
| 9 | 2025 |
| 10 | 2520 |
| 11 | 3069 |
| 12 | 3672 |
| 13 | 4329 |
| 14 | 5040 |
| 15 | 5805 |
| 16 | 6624 |
| 17 | 7497 |
| 18 | 8424 |
| 19 | 9405 |
| 20 | 10440 |
| 21 | 11529 |
| 22 | 12672 |
| 23 | 13869 |
| 24 | 15120 |
| 25 | 16425 |
| 26 | 17784 |
| 27 | 19197 |
| 28 | 20664 |
| 29 | 22185 |
| 30 | 23760 |
| 31 | 25389 |
| 32 | 27072 |
| 33 | 28809 |
| 34 | 30600 |
| 35 | 32445 |
| 36 | 34344 |
| 37 | 36297 |
| 38 | 38304 |
| 39 | 40365 |
| 40 | 42480 |
| 41 | 44649 |