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 | 1 |
| 2 | 9 |
| 3 | 242 |
| 4 | 1866 |
| 5 | 6503 |
| 6 | 15973 |
| 7 | 33236 |
| 8 | 62678 |
| 9 | 110487 |
| 10 | 185231 |
| 11 | 298538 |
| 12 | 465912 |
| 13 | 707702 |
| 14 | 1050242 |
| 15 | 1527181 |
| 16 | 2181023 |
| 17 | 3064898 |
| 18 | 4244586 |
| 19 | 5800817 |
| 20 | 7831871 |
| 21 | 10456503 |