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 | 3 |
| 2 | 5 |
| 3 | 17 |
| 4 | 19 |
| 5 | 71 |
| 6 | 73 |
| 7 | 107 |
| 8 | 109 |
| 9 | 881 |
| 10 | 883 |
| 11 | 1151 |
| 12 | 1153 |
| 13 | 2591 |
| 14 | 2593 |
| 15 | 3527 |
| 16 | 3529 |
| 17 | 4049 |
| 18 | 4051 |
| 19 | 15137 |
| 20 | 15139 |
| 21 | 20807 |
| 22 | 20809 |
| 23 | 34847 |
| 24 | 34849 |
| 25 | 46817 |
| 26 | 46819 |
| 27 | 69191 |
| 28 | 69193 |
| 29 | 83231 |
| 30 | 83233 |
| 31 | 103967 |
| 32 | 103969 |
| 33 | 112337 |
| 34 | 112339 |
| 35 | 139967 |
| 36 | 139969 |
| 37 | 149057 |
| 38 | 149059 |
| 39 | 176417 |