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 | 241 |
| 2 | 421 |
| 3 | 541 |
| 4 | 571 |
| 5 | 751 |
| 6 | 1171 |
| 7 | 1291 |
| 8 | 1621 |
| 9 | 1861 |
| 10 | 2011 |
| 11 | 2221 |
| 12 | 2251 |
| 13 | 2341 |
| 14 | 2521 |
| 15 | 2671 |
| 16 | 2851 |
| 17 | 2971 |
| 18 | 3271 |
| 19 | 3361 |
| 20 | 3391 |
| 21 | 3541 |
| 22 | 3571 |
| 23 | 3691 |
| 24 | 4021 |
| 25 | 4201 |
| 26 | 4591 |
| 27 | 4621 |
| 28 | 4861 |
| 29 | 5641 |
| 30 | 5701 |
| 31 | 5821 |
| 32 | 6211 |
| 33 | 6961 |
| 34 | 7321 |
| 35 | 7351 |
| 36 | 7591 |
| 37 | 7951 |
| 38 | 8101 |
| 39 | 8161 |
| 40 | 8191 |
| 41 | 8221 |
| 42 | 8821 |
| 43 | 8971 |
| 44 | 9151 |
| 45 | 9241 |
| 46 | 9421 |