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 | 1 |
| 2 | 12 |
| 3 | 123 |
| 4 | 213 |
| 5 | 1234 |
| 6 | 1324 |
| 7 | 2134 |
| 8 | 2314 |
| 9 | 3124 |
| 10 | 12345 |
| 11 | 12435 |
| 12 | 13245 |
| 13 | 13425 |
| 14 | 14235 |
| 15 | 21345 |
| 16 | 21435 |
| 17 | 23145 |
| 18 | 23415 |
| 19 | 24135 |
| 20 | 31245 |
| 21 | 31425 |
| 22 | 32415 |
| 23 | 34125 |
| 24 | 41235 |
| 25 | 41325 |
| 26 | 123456 |
| 27 | 123546 |
| 28 | 124356 |
| 29 | 124536 |
| 30 | 125346 |
| 31 | 132456 |
| 32 | 132546 |
| 33 | 134256 |
| 34 | 134526 |
| 35 | 135246 |
| 36 | 142356 |
| 37 | 142536 |