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 | 0 |
| 1 | 2 |
| 2 | 50 |
| 3 | 844 |
| 4 | 906 |
| 5 | 13624 |
| 6 | 13876 |
| 7 | 14642 |
| 8 | 14892 |
| 9 | 15402 |
| 10 | 218352 |
| 11 | 219368 |
| 12 | 222436 |
| 13 | 223448 |
| 14 | 225492 |
| 15 | 234722 |
| 16 | 235730 |
| 17 | 238796 |
| 18 | 239800 |
| 19 | 241844 |
| 20 | 246986 |
| 21 | 247986 |
| 22 | 250028 |
| 23 | 254122 |
| 24 | 3494880 |
| 25 | 3498960 |
| 26 | 3511240 |
| 27 | 3515312 |
| 28 | 3523496 |
| 29 | 3560388 |
| 30 | 3564452 |
| 31 | 3576728 |