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 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 4 |
| 6 | 341 |
| 7 | 6 |
| 8 | 79 |
| 9 | 8 |
| 10 | 19599 |
| 11 | 10 |
| 12 | 3937027727 |
| 13 | 12 |
| 14 | 2841 |
| 15 | 22679 |
| 16 | 47 |
| 17 | 16 |
| 18 | 18459448019 |
| 19 | 18 |
| 20 | 179 |
| 21 | 146 |
| 22 | 4003647 |
| 23 | 22 |
| 24 | 77934182399 |
| 25 | 24 |
| 26 | 299519 |
| 27 | 80 |
| 28 | 29952579 |
| 29 | 28 |