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 | 5913774023 |
| 2 | 9137740231 |
| 3 | 7402314407 |
| 4 | 4023144077 |
| 5 | 8735261779 |
| 6 | 4830981887 |
| 7 | 8309818873 |
| 8 | 3307626667 |
| 9 | 8853659527 |
| 10 | 6595276357 |
| 11 | 5952763577 |
| 12 | 7635775283 |
| 13 | 3577528379 |
| 14 | 3792268331 |
| 15 | 9085975607 |
| 16 | 9264752779 |
| 17 | 6698082641 |
| 18 | 8968771057 |
| 19 | 1057327889 |
| 20 | 5972589229 |
| 21 | 4137067777 |