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 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 4 |
| 6 | 5 |
| 7 | 308 |
| 8 | 4920 |
| 9 | 11284 |
| 10 | 11914 |
| 11 | 144393 |
| 12 | 195453 |
| 13 | 518659 |
| 14 | 866358 |
| 15 | 925148 |
| 16 | 1010765 |
| 17 | 1172718 |
| 18 | 1369865 |
| 19 | 2141968 |
| 20 | 2557924 |
| 21 | 4287428 |
| 22 | 4296908 |
| 23 | 6064590 |
| 24 | 8219190 |
| 25 | 15347544 |
| 26 | 16891738 |
| 27 | 18409156 |
| 28 | 18532263 |
| 29 | 21880744 |
| 30 | 23693054 |
| 31 | 25724568 |
| 32 | 25781448 |
| 33 | 88115915 |
| 34 | 93066844 |