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 | 6 |
| 1 | 39 |
| 2 | 455 |
| 3 | 6813 |
| 4 | 112931 |
| 5 | 1956669 |
| 6 | 34591115 |
| 7 | 617285253 |
| 8 | 11064693731 |
| 9 | 198756808749 |
| 10 | 3574014537275 |
| 11 | 64300154115093 |
| 12 | 1157115988280531 |
| 13 | 20825519793796029 |
| 14 | 374836322743499435 |
| 15 | 6746846977808919333 |