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 | 9 |
| 2 | 75 |
| 3 | 111 |
| 4 | 261 |
| 5 | 325 |
| 6 | 559 |
| 7 | 651 |
| 8 | 969 |
| 9 | 1089 |
| 10 | 1491 |
| 11 | 1639 |
| 12 | 2125 |
| 13 | 2301 |
| 14 | 2871 |
| 15 | 3075 |
| 16 | 3729 |
| 17 | 3961 |
| 18 | 4699 |
| 19 | 4959 |
| 20 | 5781 |
| 21 | 6069 |
| 22 | 6975 |
| 23 | 7291 |
| 24 | 8281 |
| 25 | 8625 |
| 26 | 9699 |
| 27 | 10071 |
| 28 | 11229 |
| 29 | 11629 |
| 30 | 12871 |
| 31 | 13299 |
| 32 | 14625 |
| 33 | 15081 |
| 34 | 16491 |
| 35 | 16975 |
| 36 | 18469 |
| 37 | 18981 |
| 38 | 20559 |
| 39 | 21099 |
| 40 | 22761 |
| 41 | 23329 |
| 42 | 25075 |