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) |
|---|---|
| 0 | 1 |
| 1 | 11 |
| 2 | 22 |
| 3 | 36 |
| 4 | 424 |
| 5 | 5120 |
| 6 | 6720 |
| 7 | 75040 |
| 8 | 840320 |
| 9 | 9362880 |
| 10 | 102 |
| 11 | 112 |
| 12 | 123 |
| 13 | 137 |
| 14 | 1425 |
| 15 | 15121 |
| 16 | 16721 |
| 17 | 175041 |
| 18 | 1840321 |
| 19 | 19362881 |
| 20 | 203 |
| 21 | 213 |
| 22 | 224 |
| 23 | 238 |
| 24 | 2426 |
| 25 | 25122 |
| 26 | 26722 |
| 27 | 275042 |
| 28 | 2840322 |
| 29 | 29362882 |
| 30 | 307 |
| 31 | 317 |
| 32 | 328 |
| 33 | 3312 |
| 34 | 3430 |
| 35 | 35126 |
| 36 | 36726 |
| 37 | 375046 |