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 | 11 |
| 3 | 10101 |
| 4 | 202 |
| 5 | 11111 |
| 6 | 1221 |
| 7 | 12121 |
| 8 | 2222 |
| 9 | 13131 |
| 10 | 4114 |
| 11 | 20702 |
| 12 | 6006 |
| 13 | 22522 |
| 14 | 12821 |
| 15 | 25152 |
| 16 | 14641 |
| 17 | 32723 |
| 18 | 16461 |
| 19 | 35353 |
| 20 | 25652 |
| 21 | 43734 |
| 22 | 35653 |
| 23 | 52925 |
| 24 | 46464 |
| 25 | 62926 |
| 26 | 58085 |
| 27 | 73737 |
| 28 | 75457 |
| 29 | 85358 |
| 30 | 92829 |