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 | 4 |
| 2 | 9 |
| 3 | 121 |
| 4 | 212 |
| 5 | 1001 |
| 6 | 10201 |
| 7 | 110011 |
| 8 | 1100011 |
| 9 | 10100101 |
| 10 | 11000011 |
| 11 | 101000101 |
| 12 | 110000011 |
| 13 | 1010000101 |
| 14 | 1100000011 |
| 15 | 10000000001 |
| 16 | 10100000101 |
| 17 | 1000000000001 |
| 18 | 10000000000001 |
| 19 | 10011100000111001 |
| 20 | 10022212521222001 |
| 21 | 10100101110100101 |
| 22 | 10101100100110101 |