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 | 4 |
| 2 | 9 |
| 3 | 25 |
| 4 | 49 |
| 5 | 81 |
| 6 | 169 |
| 7 | 243 |
| 8 | 361 |
| 9 | 729 |
| 10 | 841 |
| 11 | 1369 |
| 12 | 1849 |
| 13 | 2209 |
| 14 | 2401 |
| 15 | 3721 |
| 16 | 5041 |
| 17 | 6859 |
| 18 | 7921 |
| 19 | 10609 |
| 20 | 11449 |
| 21 | 14641 |
| 22 | 16129 |
| 23 | 17161 |
| 24 | 19321 |
| 25 | 19683 |
| 26 | 28561 |
| 27 | 29791 |
| 28 | 29929 |
| 29 | 36481 |
| 30 | 44521 |
| 31 | 49729 |
| 32 | 50653 |
| 33 | 54289 |
| 34 | 57121 |
| 35 | 66049 |
| 36 | 85849 |
| 37 | 97969 |
| 38 | 113569 |
| 39 | 128881 |