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 | 0 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 13 |
| 5 | 113 |
| 6 | 1113 |
| 7 | 11113 |
| 8 | 1011113 |
| 9 | 101011113 |
| 10 | 1101111211 |
| 11 | 110101111211 |
| 12 | 100110101111211 |
| 13 | 10101010101101122 |
| 14 | 1011111111100000013 |
| 15 | 1010111111111000000022 |
| 16 | 111000010111000111111111 |
| 17 | 1010110111101110100000011111 |
| 18 | 1111111110010101100001100000102 |