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 | 1 |
| 2 | 225 |
| 3 | 22201 |
| 4 | 5555449 |
| 5 | 111112681 |
| 6 | 3333330225 |
| 7 | 555555566736 |
| 8 | 2222222266944 |
| 9 | 33333333393562596 |
| 10 | 88888888888905609 |
| 11 | 88888888888905609 |
| 12 | 2222222222222640225 |
| 13 | 2222222222222640225 |
| 14 | 111111111111119590793871025 |
| 15 | 5555555555555557064110500049 |
| 16 | 11111111111111115805344390916 |