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 | 122 |
| 3 | 2333 |
| 4 | 34444 |
| 5 | 455555 |
| 6 | 5666666 |
| 7 | 67777777 |
| 8 | 788888888 |
| 9 | 8999999999 |
| 10 | 101010101010101010010 |
| 11 | 11111111110111111111111 |
| 12 | 1212121121212121212121212 |
| 13 | 131313013131313131313131313 |
| 14 | 14141241414141414141414141414 |