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 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 121 |
| 7 | 841 |
| 8 | 3361 |
| 9 | 10081 |
| 10 | 25201 |
| 11 | 55441 |
| 12 | 6763681 |
| 13 | 86692321 |
| 14 | 605765161 |
| 15 | 3027624601 |
| 16 | 12109056961 |
| 17 | 41169011521 |
| 18 | 5063607974881 |
| 19 | 94197184734241 |
| 20 | 939457659787201 |
| 21 | 6572292677455681 |
| 22 | 36141156689382361 |
| 23 | 166238526616664041 |
| 24 | 20612479896229156321 |