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 | 22 |
| 3 | 121 |
| 4 | 202 |
| 5 | 1111 |
| 6 | 2002 |
| 7 | 10201 |
| 8 | 11011 |
| 9 | 20002 |
| 10 | 101101 |
| 11 | 110011 |
| 12 | 200002 |
| 13 | 1002001 |
| 14 | 1010101 |
| 15 | 1100011 |
| 16 | 2000002 |
| 17 | 10011001 |
| 18 | 10100101 |
| 19 | 11000011 |
| 20 | 20000002 |
| 21 | 100020001 |
| 22 | 100101001 |
| 23 | 101000101 |
| 24 | 110000011 |
| 25 | 200000002 |
| 26 | 1000110001 |
| 27 | 1001001001 |