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 | 2 |
| 2 | 3 |
| 3 | 6 |
| 4 | 15 |
| 5 | 15 |
| 6 | 91 |
| 7 | 246 |
| 8 | 399 |
| 9 | 399 |
| 10 | 399 |
| 11 | 3045 |
| 12 | 3045 |
| 13 | 21099 |
| 14 | 41155 |
| 15 | 43059 |
| 16 | 182919 |
| 17 | 182919 |
| 18 | 182919 |
| 19 | 182919 |
| 20 | 860574 |
| 21 | 860574 |
| 22 | 8042479 |
| 23 | 8042479 |
| 24 | 11993466 |
| 25 | 11993466 |
| 26 | 11993466 |
| 27 | 78278655 |
| 28 | 78278655 |
| 29 | 78278655 |
| 30 | 78278655 |