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 | 45 |
| 2 | 135 |
| 3 | 225 |
| 4 | 405 |
| 5 | 675 |
| 6 | 765 |
| 7 | 855 |
| 8 | 1035 |
| 9 | 1125 |
| 10 | 1215 |
| 11 | 1275 |
| 12 | 1305 |
| 13 | 1395 |
| 14 | 1665 |
| 15 | 1845 |
| 16 | 1935 |
| 17 | 2025 |
| 18 | 2115 |
| 19 | 2295 |
| 20 | 2565 |
| 21 | 3105 |
| 22 | 3375 |
| 23 | 3645 |
| 24 | 3825 |
| 25 | 3915 |
| 26 | 4185 |
| 27 | 4275 |
| 28 | 4995 |
| 29 | 5175 |
| 30 | 5535 |
| 31 | 5625 |
| 32 | 5805 |
| 33 | 6075 |
| 34 | 6345 |
| 35 | 6375 |
| 36 | 6525 |
| 37 | 6885 |
| 38 | 6975 |
| 39 | 7155 |
| 40 | 7695 |
| 41 | 7965 |
| 42 | 8235 |
| 43 | 8325 |
| 44 | 9045 |
| 45 | 9225 |