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 | 21 |
| 2 | 144 |
| 3 | 987 |
| 4 | 1008 |
| 5 | 6765 |
| 6 | 6786 |
| 7 | 6909 |
| 8 | 46368 |
| 9 | 46389 |
| 10 | 46512 |
| 11 | 47355 |
| 12 | 47376 |
| 13 | 317811 |
| 14 | 317832 |
| 15 | 317955 |
| 16 | 318798 |
| 17 | 318819 |
| 18 | 324576 |
| 19 | 324597 |
| 20 | 324720 |
| 21 | 2178309 |
| 22 | 2178330 |
| 23 | 2178453 |
| 24 | 2179296 |
| 25 | 2179317 |
| 26 | 2185074 |
| 27 | 2185095 |
| 28 | 2185218 |
| 29 | 2224677 |
| 30 | 2224698 |