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 | 25 |
| 3 | 49 |
| 4 | 121 |
| 5 | 289 |
| 6 | 1849 |
| 7 | 5041 |
| 8 | 11881 |
| 9 | 32761 |
| 10 | 109561 |
| 11 | 196249 |
| 12 | 6466849 |
| 13 | 9369721 |
| 14 | 30283009 |
| 15 | 52374169 |
| 16 | 72880369 |
| 17 | 1000267129 |