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 | 11 |
| 2 | 13 |
| 3 | 17 |
| 4 | 31 |
| 5 | 37 |
| 6 | 97 |
| 7 | 131 |
| 8 | 163 |
| 9 | 271 |
| 10 | 277 |
| 11 | 331 |
| 12 | 811 |
| 13 | 1511 |
| 14 | 2437 |
| 15 | 2731 |
| 16 | 3511 |
| 17 | 7297 |
| 18 | 9127 |
| 19 | 9511 |
| 20 | 18191 |
| 21 | 21871 |
| 22 | 27127 |
| 23 | 65617 |
| 24 | 72931 |
| 25 | 196831 |
| 26 | 196837 |
| 27 | 278191 |
| 28 | 332767 |
| 29 | 729511 |
| 30 | 812047 |
| 31 | 1262143 |
| 32 | 1524287 |
| 33 | 1968331 |
| 34 | 2187511 |
| 35 | 5314411 |
| 36 | 5314417 |
| 37 | 5904931 |
| 38 | 6561127 |
| 39 | 7298191 |
| 40 | 15943237 |
| 41 | 47829697 |
| 42 | 53144131 |