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 | 30 |
| 2 | 105 |
| 3 | 230 |
| 4 | 405 |
| 5 | 630 |
| 6 | 905 |
| 7 | 1230 |
| 8 | 1605 |
| 9 | 2030 |
| 10 | 2505 |
| 11 | 3030 |
| 12 | 3605 |
| 13 | 4230 |
| 14 | 4905 |
| 15 | 5630 |
| 16 | 6405 |
| 17 | 7230 |
| 18 | 8105 |
| 19 | 9030 |
| 20 | 10005 |
| 21 | 11030 |
| 22 | 12105 |
| 23 | 13230 |
| 24 | 14405 |
| 25 | 15630 |
| 26 | 16905 |
| 27 | 18230 |
| 28 | 19605 |
| 29 | 21030 |
| 30 | 22505 |
| 31 | 24030 |
| 32 | 25605 |
| 33 | 27230 |
| 34 | 28905 |
| 35 | 30630 |
| 36 | 32405 |
| 37 | 34230 |
| 38 | 36105 |
| 39 | 38030 |
| 40 | 40005 |
| 41 | 42030 |