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 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 94488 |
| 5 | 0 |
| 6 | 74078592 |
| 7 | 3128434688 |
| 8 | 312335197020 |
| 9 | 18125860315136 |
| 10 | 552366841342848 |
| 11 | 9491208609103872 |
| 12 | 94117043084875944 |
| 13 | 549823502398291968 |
| 14 | 1920604779257215744 |
| 15 | 4051966906789380096 |
| 16 | 5193595576952890822 |
| 17 | 4051966906789380096 |
| 18 | 1920604779257215744 |
| 19 | 549823502398291968 |
| 20 | 94117043084875944 |
| 21 | 9491208609103872 |
| 22 | 552366841342848 |
| 23 | 18125860315136 |
| 24 | 312335197020 |
| 25 | 3128434688 |
| 26 | 74078592 |
| 27 | 0 |
| 28 | 94488 |
| 29 | 0 |
| 30 | 0 |
| 31 | 0 |
| 32 | 1 |