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 | 30 |
| 3 | 63 |
| 4 | 108 |
| 5 | 165 |
| 6 | 234 |
| 7 | 315 |
| 8 | 408 |
| 9 | 513 |
| 10 | 630 |
| 11 | 759 |
| 12 | 900 |
| 13 | 1053 |
| 14 | 1218 |
| 15 | 1395 |
| 16 | 1584 |
| 17 | 1785 |
| 18 | 1998 |
| 19 | 2223 |
| 20 | 2460 |
| 21 | 2709 |
| 22 | 2970 |
| 23 | 3243 |
| 24 | 3528 |
| 25 | 3825 |
| 26 | 4134 |
| 27 | 4455 |
| 28 | 4788 |
| 29 | 5133 |
| 30 | 5490 |
| 31 | 5859 |
| 32 | 6240 |
| 33 | 6633 |
| 34 | 7038 |
| 35 | 7455 |
| 36 | 7884 |
| 37 | 8325 |
| 38 | 8778 |
| 39 | 9243 |
| 40 | 9720 |
| 41 | 10209 |
| 42 | 10710 |
| 43 | 11223 |