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 | 19 |
| 2 | 31 |
| 3 | 67 |
| 4 | 127 |
| 5 | 151 |
| 6 | 211 |
| 7 | 271 |
| 8 | 307 |
| 9 | 547 |
| 10 | 727 |
| 11 | 787 |
| 12 | 811 |
| 13 | 907 |
| 14 | 967 |
| 15 | 991 |
| 16 | 1447 |
| 17 | 1531 |
| 18 | 1831 |
| 19 | 1867 |
| 20 | 2131 |
| 21 | 2467 |
| 22 | 2647 |
| 23 | 2887 |
| 24 | 2971 |
| 25 | 3967 |
| 26 | 5107 |
| 27 | 5227 |
| 28 | 5407 |
| 29 | 5431 |
| 30 | 5827 |
| 31 | 6091 |
| 32 | 6427 |
| 33 | 6451 |
| 34 | 6607 |
| 35 | 6907 |
| 36 | 6991 |
| 37 | 7411 |
| 38 | 8191 |
| 39 | 8431 |
| 40 | 8707 |
| 41 | 9511 |
| 42 | 10111 |