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 | 3 |
| 2 | 18 |
| 3 | 68 |
| 4 | 443 |
| 5 | 1068 |
| 6 | 1068 |
| 7 | 32318 |
| 8 | 110443 |
| 9 | 1672943 |
| 10 | 3626068 |
| 11 | 23157318 |
| 12 | 120813568 |
| 13 | 1097376068 |
| 14 | 1097376068 |
| 15 | 19407922943 |
| 16 | 49925501068 |
| 17 | 355101282318 |
| 18 | 355101282318 |
| 19 | 15613890344818 |
| 20 | 15613890344818 |
| 21 | 110981321985443 |
| 22 | 110981321985443 |
| 23 | 9647724486047943 |
| 24 | 9647724486047943 |