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 | 2 |
| 2 | 48622 |
| 3 | 9373652 |
| 4 | 9263421862 |
| 5 | 3433541316152 |
| 6 | 2140802758677844 |
| 7 | 984101481334553024 |
| 8 | 536617781178725122150 |
| 9 | 265166261617029717011822 |
| 10 | 138567978655457801631498052 |
| 11 | 70126939586658252408697345838 |
| 12 | 36144812798331420987905742371116 |