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 | 121 |
| 2 | 403 |
| 3 | 1207 |
| 4 | 1243 |
| 5 | 1703 |
| 6 | 2321 |
| 7 | 2701 |
| 8 | 3421 |
| 9 | 3503 |
| 10 | 3629 |
| 11 | 4043 |
| 12 | 4061 |
| 13 | 4069 |
| 14 | 4121 |
| 15 | 4247 |
| 16 | 4303 |
| 17 | 4309 |
| 18 | 4607 |
| 19 | 5603 |
| 20 | 6109 |
| 21 | 6401 |
| 22 | 7663 |
| 23 | 8203 |
| 24 | 8921 |
| 25 | 9329 |
| 26 | 9703 |
| 27 | 9707 |
| 28 | 9943 |
| 29 | 10001 |
| 30 | 10021 |
| 31 | 10187 |
| 32 | 10201 |
| 33 | 12223 |
| 34 | 12283 |
| 35 | 12709 |
| 36 | 13129 |
| 37 | 13801 |
| 38 | 14921 |
| 39 | 15007 |