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 | 4 |
| 1 | 1 |
| 2 | 9 |
| 3 | 16 |
| 4 | 49 |
| 5 | 11 |
| 6 | 164 |
| 7 | 481 |
| 8 | 1649 |
| 9 | 4936 |
| 10 | 149 |
| 11 | 18181 |
| 12 | 944 |
| 13 | 2541 |
| 14 | 64169 |
| 15 | 193616 |
| 16 | 44049 |
| 17 | 925491 |
| 18 | 25494964 |
| 19 | 8191681 |
| 20 | 1251449 |
| 21 | 416164936 |
| 22 | 9813609 |
| 23 | 361604981 |
| 24 | 10936644 |
| 25 | 1364949361 |
| 26 | 449116169 |
| 27 | 169814016 |
| 28 | 4910361649 |
| 29 | 11168164251 |
| 30 | 164360168164 |
| 31 | 901091681 |