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 | 181 |
| 2 | 229 |
| 3 | 421 |
| 4 | 661 |
| 5 | 709 |
| 6 | 829 |
| 7 | 1021 |
| 8 | 1321 |
| 9 | 1489 |
| 10 | 1549 |
| 11 | 1609 |
| 12 | 1621 |
| 13 | 1741 |
| 14 | 2029 |
| 15 | 2161 |
| 16 | 2269 |
| 17 | 2281 |
| 18 | 2341 |
| 19 | 2689 |
| 20 | 3001 |
| 21 | 3061 |
| 22 | 3169 |
| 23 | 3301 |
| 24 | 3469 |
| 25 | 3529 |
| 26 | 4129 |
| 27 | 4261 |
| 28 | 4621 |
| 29 | 4789 |
| 30 | 4801 |
| 31 | 4909 |
| 32 | 5281 |
| 33 | 5449 |
| 34 | 5569 |
| 35 | 5581 |
| 36 | 5641 |
| 37 | 5701 |
| 38 | 6121 |
| 39 | 6229 |
| 40 | 6301 |
| 41 | 6361 |