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 | 23 |
| 2 | 67 |
| 3 | 811 |
| 4 | 911 |
| 5 | 1213 |
| 6 | 2729 |
| 7 | 3137 |
| 8 | 3637 |
| 9 | 4243 |
| 10 | 4447 |
| 11 | 4547 |
| 12 | 5153 |
| 13 | 5659 |
| 14 | 6367 |
| 15 | 6871 |
| 16 | 6971 |
| 17 | 7879 |
| 18 | 8389 |
| 19 | 8689 |
| 20 | 9397 |
| 21 | 9497 |
| 22 | 9697 |
| 23 | 98101 |
| 24 | 102103 |
| 25 | 104107 |
| 26 | 105107 |
| 27 | 108109 |
| 28 | 115127 |
| 29 | 117127 |
| 30 | 118127 |
| 31 | 123127 |
| 32 | 126127 |
| 33 | 132137 |
| 34 | 138139 |
| 35 | 150151 |
| 36 | 151157 |
| 37 | 154157 |
| 38 | 156157 |
| 39 | 157163 |