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) |
|---|---|
| 2 | 5 |
| 3 | 37 |
| 4 | 145 |
| 5 | 471 |
| 6 | 901 |
| 7 | 2185 |
| 8 | 3969 |
| 9 | 5563 |
| 10 | 11141 |
| 11 | 17293 |
| 12 | 21913 |
| 13 | 36479 |
| 14 | 50485 |
| 15 | 51661 |
| 16 | 90753 |
| 17 | 118355 |
| 18 | 139861 |
| 19 | 191445 |
| 20 | 238481 |