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) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 9 |
| 5 | 25 |
| 6 | 25 |
| 7 | 25 |
| 8 | 25 |
| 9 | 281 |
| 10 | 281 |
| 11 | 281 |
| 12 | 281 |
| 13 | 4377 |
| 14 | 4377 |
| 15 | 20761 |
| 16 | 53529 |
| 17 | 53529 |
| 18 | 184601 |
| 19 | 446745 |
| 20 | 971033 |
| 21 | 2019609 |
| 22 | 4116761 |
| 23 | 8311065 |
| 24 | 8311065 |
| 25 | 25088281 |
| 26 | 58642713 |
| 27 | 125751577 |
| 28 | 259969305 |
| 29 | 259969305 |
| 30 | 259969305 |
| 31 | 259969305 |
| 32 | 259969305 |
| 33 | 4554936601 |
| 34 | 13144871193 |