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 | 13 |
| 2 | 15 |
| 3 | 35 |
| 4 | 121 |
| 5 | 256 |
| 6 | 576 |
| 7 | 1225 |
| 8 | 2601 |
| 9 | 5625 |
| 10 | 12100 |
| 11 | 25921 |
| 12 | 55696 |
| 13 | 119716 |
| 14 | 257049 |
| 15 | 552049 |
| 16 | 1185921 |
| 17 | 2547216 |
| 18 | 5470921 |
| 19 | 11751184 |
| 20 | 25240576 |
| 21 | 54213769 |
| 22 | 116445681 |
| 23 | 250114225 |
| 24 | 537219684 |
| 25 | 1153892961 |
| 26 | 2478446656 |
| 27 | 5323453444 |
| 28 | 11434238761 |