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 | 109 |
| 2 | 421 |
| 3 | 541 |
| 4 | 709 |
| 5 | 1009 |
| 6 | 1129 |
| 7 | 1201 |
| 8 | 1381 |
| 9 | 1429 |
| 10 | 1549 |
| 11 | 1621 |
| 12 | 1789 |
| 13 | 1801 |
| 14 | 2221 |
| 15 | 2269 |
| 16 | 2389 |
| 17 | 2521 |
| 18 | 2689 |
| 19 | 3049 |
| 20 | 3061 |
| 21 | 3109 |
| 22 | 3229 |
| 23 | 3301 |
| 24 | 3361 |
| 25 | 3469 |
| 26 | 3529 |
| 27 | 3889 |
| 28 | 4201 |
| 29 | 4561 |
| 30 | 4621 |
| 31 | 4729 |
| 32 | 4789 |
| 33 | 4909 |
| 34 | 5209 |
| 35 | 5569 |
| 36 | 5581 |
| 37 | 5749 |
| 38 | 5821 |
| 39 | 5881 |
| 40 | 6301 |