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 | 11 |
| 2 | 2401 |
| 3 | 1003003001 |
| 4 | 38513670001 |
| 5 | 3200800080004000100001 |
| 6 | 109572174941077441712143556000001 |
| 7 | 10000007000002100000350000035000002100000070000001 |