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 | 3 |
| 3 | 3 |
| 4 | 3 |
| 5 | 7 |
| 6 | 11 |
| 7 | 19 |
| 8 | 31 |
| 9 | 73 |
| 10 | 79 |
| 11 | 131 |
| 12 | 151 |
| 13 | 271 |
| 14 | 331 |
| 15 | 631 |
| 16 | 811 |
| 17 | 937 |
| 18 | 1171 |
| 19 | 2731 |
| 20 | 3511 |
| 21 | 3511 |
| 22 | 6553 |
| 23 | 8191 |
| 24 | 10531 |
| 25 | 15121 |
| 26 | 23311 |
| 27 | 65521 |
| 28 | 86113 |
| 29 | 87211 |
| 30 | 107251 |
| 31 | 121369 |
| 32 | 262657 |
| 33 | 348031 |
| 34 | 409891 |
| 35 | 446473 |
| 36 | 1024921 |
| 37 | 1969111 |
| 38 | 4633201 |
| 39 | 7623851 |
| 40 | 18837001 |
| 41 | 22366891 |
| 42 | 29121769 |