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 | 139 |
| 2 | 229 |
| 3 | 409 |
| 4 | 499 |
| 5 | 769 |
| 6 | 859 |
| 7 | 1039 |
| 8 | 1129 |
| 9 | 1399 |
| 10 | 1489 |
| 11 | 1579 |
| 12 | 1669 |
| 13 | 1759 |
| 14 | 2029 |
| 15 | 2389 |
| 16 | 2659 |
| 17 | 2749 |
| 18 | 3019 |
| 19 | 3109 |
| 20 | 3469 |
| 21 | 3559 |
| 22 | 3739 |
| 23 | 3919 |
| 24 | 4099 |
| 25 | 4549 |
| 26 | 4639 |
| 27 | 4729 |
| 28 | 4909 |
| 29 | 4999 |
| 30 | 5179 |
| 31 | 5449 |
| 32 | 6079 |
| 33 | 6529 |
| 34 | 6619 |
| 35 | 6709 |
| 36 | 7069 |
| 37 | 7159 |
| 38 | 7699 |
| 39 | 7789 |
| 40 | 7879 |
| 41 | 8059 |
| 42 | 8329 |
| 43 | 8419 |
| 44 | 8599 |