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 | 101 |
| 2 | 1001 |
| 3 | 10001 |
| 4 | 50001 |
| 5 | 100001 |
| 6 | 100002 |
| 7 | 100005 |
| 8 | 100011 |
| 9 | 100101 |
| 10 | 100549 |
| 11 | 101001 |
| 12 | 110001 |
| 13 | 114499 |
| 14 | 200001 |
| 15 | 316261 |
| 16 | 375501 |
| 17 | 500001 |
| 18 | 1000001 |
| 19 | 1000002 |
| 20 | 1000005 |
| 21 | 1000011 |
| 22 | 1000101 |
| 23 | 1001001 |
| 24 | 1010001 |
| 25 | 1100001 |
| 26 | 2000001 |
| 27 | 5000001 |
| 28 | 5000002 |