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 | 9 |
| 2 | 81 |
| 3 | 252 |
| 4 | 558 |
| 5 | 1035 |
| 6 | 1719 |
| 7 | 2646 |
| 8 | 3852 |
| 9 | 5373 |
| 10 | 7245 |
| 11 | 9504 |
| 12 | 12186 |
| 13 | 15327 |
| 14 | 18963 |
| 15 | 23130 |
| 16 | 27864 |
| 17 | 33201 |
| 18 | 39177 |
| 19 | 45828 |
| 20 | 53190 |
| 21 | 61299 |
| 22 | 70191 |
| 23 | 79902 |
| 24 | 90468 |
| 25 | 101925 |
| 26 | 114309 |
| 27 | 127656 |
| 28 | 142002 |
| 29 | 157383 |
| 30 | 173835 |
| 31 | 191394 |
| 32 | 210096 |
| 33 | 229977 |
| 34 | 251073 |
| 35 | 273420 |
| 36 | 297054 |