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 | 15 |
| 3 | 105 |
| 4 | 195 |
| 5 | 825 |
| 6 | 1485 |
| 7 | 1875 |
| 8 | 2085 |
| 9 | 3255 |
| 10 | 3465 |
| 11 | 5655 |
| 12 | 9435 |
| 13 | 13005 |
| 14 | 15645 |
| 15 | 15735 |
| 16 | 16065 |
| 17 | 18045 |
| 18 | 18915 |
| 19 | 19425 |
| 20 | 21015 |
| 21 | 22275 |
| 22 | 25305 |
| 23 | 31725 |
| 24 | 34845 |
| 25 | 43785 |
| 26 | 51345 |
| 27 | 55335 |
| 28 | 62985 |
| 29 | 67215 |
| 30 | 69495 |
| 31 | 72225 |
| 32 | 77265 |
| 33 | 79695 |
| 34 | 81045 |
| 35 | 82725 |
| 36 | 88815 |
| 37 | 97845 |