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 | 2 |
| 2 | 13 |
| 3 | 31 |
| 4 | 79 |
| 5 | 97 |
| 6 | 101 |
| 7 | 109 |
| 8 | 131 |
| 9 | 181 |
| 10 | 227 |
| 11 | 313 |
| 12 | 401 |
| 13 | 409 |
| 14 | 631 |
| 15 | 727 |
| 16 | 797 |
| 17 | 881 |
| 18 | 1009 |
| 19 | 1013 |
| 20 | 1097 |
| 21 | 2797 |
| 22 | 3109 |
| 23 | 3181 |
| 24 | 3631 |
| 25 | 4001 |
| 26 | 4013 |
| 27 | 7901 |
| 28 | 8101 |
| 29 | 9001 |
| 30 | 9013 |
| 31 | 10009 |
| 32 | 10181 |
| 33 | 10909 |
| 34 | 10979 |
| 35 | 13109 |
| 36 | 18131 |
| 37 | 18181 |
| 38 | 22279 |
| 39 | 22727 |
| 40 | 27901 |
| 41 | 31013 |
| 42 | 36313 |