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 | 27 |
| 2 | 180 |
| 3 | 567 |
| 4 | 1296 |
| 5 | 2475 |
| 6 | 4212 |
| 7 | 6615 |
| 8 | 9792 |
| 9 | 13851 |
| 10 | 18900 |
| 11 | 25047 |
| 12 | 32400 |
| 13 | 41067 |
| 14 | 51156 |
| 15 | 62775 |
| 16 | 76032 |
| 17 | 91035 |
| 18 | 107892 |
| 19 | 126711 |
| 20 | 147600 |
| 21 | 170667 |
| 22 | 196020 |
| 23 | 223767 |
| 24 | 254016 |
| 25 | 286875 |
| 26 | 322452 |
| 27 | 360855 |
| 28 | 402192 |
| 29 | 446571 |
| 30 | 494100 |
| 31 | 544887 |
| 32 | 599040 |
| 33 | 656667 |
| 34 | 717876 |
| 35 | 782775 |
| 36 | 851472 |
| 37 | 924075 |
| 38 | 1000692 |
| 39 | 1081431 |
| 40 | 1166400 |