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 | 1 |
| 1 | 101 |
| 2 | 1 |
| 3 | 10100 |
| 4 | 102 |
| 5 | 1 |
| 6 | 1010000 |
| 7 | 10202 |
| 8 | 103 |
| 9 | 1 |
| 10 | 101000000 |
| 11 | 1020202 |
| 12 | 10305 |
| 13 | 104 |
| 14 | 1 |
| 15 | 10100000000 |
| 16 | 102020202 |
| 17 | 1030507 |
| 18 | 10409 |
| 19 | 105 |
| 20 | 1 |
| 21 | 1010000000000 |
| 22 | 10202020202 |
| 23 | 103050709 |
| 24 | 1040916 |
| 25 | 10514 |
| 26 | 106 |
| 27 | 1 |
| 28 | 101000000000000 |
| 29 | 1020202020202 |