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 | 135 |
| 2 | 819 |
| 3 | 3375 |
| 4 | 6975 |
| 5 | 1485 |
| 6 | 9009 |
| 7 | 2295 |
| 8 | 13923 |
| 9 | 2565 |
| 10 | 15561 |
| 11 | 3105 |
| 12 | 18837 |
| 13 | 3915 |
| 14 | 23751 |
| 15 | 4185 |
| 16 | 25389 |
| 17 | 4995 |
| 18 | 30303 |
| 19 | 5535 |
| 20 | 33579 |
| 21 | 5805 |
| 22 | 35217 |
| 23 | 6345 |
| 24 | 38493 |
| 25 | 25137 |
| 26 | 40131 |
| 27 | 7155 |
| 28 | 43407 |
| 29 | 7965 |
| 30 | 48321 |
| 31 | 8235 |
| 32 | 49959 |
| 33 | 9045 |
| 34 | 54873 |
| 35 | 9585 |
| 36 | 58149 |
| 37 | 9855 |
| 38 | 59787 |
| 39 | 10665 |
| 40 | 64701 |