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 | 270 |
| 4 | 630 |
| 5 | 1215 |
| 6 | 2079 |
| 7 | 3276 |
| 8 | 4860 |
| 9 | 6885 |
| 10 | 9405 |
| 11 | 12474 |
| 12 | 16146 |
| 13 | 20475 |
| 14 | 25515 |
| 15 | 31320 |
| 16 | 37944 |
| 17 | 45441 |
| 18 | 53865 |
| 19 | 63270 |
| 20 | 73710 |
| 21 | 85239 |
| 22 | 97911 |
| 23 | 111780 |
| 24 | 126900 |
| 25 | 143325 |
| 26 | 161109 |
| 27 | 180306 |
| 28 | 200970 |
| 29 | 223155 |
| 30 | 246915 |
| 31 | 272304 |
| 32 | 299376 |
| 33 | 328185 |
| 34 | 358785 |
| 35 | 391230 |