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 | 25 |
| 2 | 625 |
| 3 | 11804 |
| 4 | 218637 |
| 5 | 4107593 |
| 6 | 77359677 |
| 7 | 1455935650 |
| 8 | 27394495918 |
| 9 | 515466231841 |
| 10 | 9699443092866 |
| 11 | 182512279469866 |
| 12 | 3434286824366669 |
| 13 | 64622121983338176 |
| 14 | 1215978582236350201 |
| 15 | 22880768560680353074 |