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) |
|---|---|
| 2 | 21 |
| 3 | 231 |
| 4 | 312 |
| 5 | 2143 |
| 6 | 2341 |
| 7 | 2413 |
| 8 | 3142 |
| 9 | 3412 |
| 10 | 3421 |
| 11 | 4123 |
| 12 | 4312 |
| 13 | 4321 |
| 14 | 21453 |
| 15 | 21534 |
| 16 | 23154 |
| 17 | 23451 |
| 18 | 23514 |
| 19 | 24153 |
| 20 | 24513 |
| 21 | 24531 |
| 22 | 25134 |
| 23 | 25413 |
| 24 | 25431 |
| 25 | 31254 |
| 26 | 31452 |
| 27 | 31524 |
| 28 | 34152 |
| 29 | 34251 |
| 30 | 34512 |
| 31 | 34521 |
| 32 | 35124 |
| 33 | 35214 |
| 34 | 35412 |
| 35 | 35421 |
| 36 | 41253 |
| 37 | 41523 |
| 38 | 41532 |
| 39 | 43152 |
| 40 | 43251 |
| 41 | 43512 |