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 | 47 |
| 2 | 811 |
| 3 | 1013 |
| 4 | 1619 |
| 5 | 4447 |
| 6 | 4649 |
| 7 | 5659 |
| 8 | 5861 |
| 9 | 6871 |
| 10 | 7477 |
| 11 | 8689 |
| 12 | 9497 |
| 13 | 98101 |
| 14 | 100103 |
| 15 | 104107 |
| 16 | 106109 |
| 17 | 136139 |
| 18 | 140143 |
| 19 | 148151 |
| 20 | 154157 |
| 21 | 158161 |
| 22 | 160163 |
| 23 | 166169 |
| 24 | 176179 |
| 25 | 184187 |
| 26 | 194197 |
| 27 | 206209 |
| 28 | 230233 |
| 29 | 244247 |
| 30 | 250253 |
| 31 | 254257 |