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 | 1 |
| 2 | 11 |
| 3 | 141 |
| 4 | 1931 |
| 5 | 27437 |
| 6 | 399067 |
| 7 | 5898717 |
| 8 | 88222507 |
| 9 | 1331336717 |
| 10 | 20232408443 |
| 11 | 309216796733 |
| 12 | 4747834841803 |
| 13 | 73183422791533 |
| 14 | 1131766137398043 |
| 15 | 17551887415384989 |
| 16 | 272866603309799019 |
| 17 | 4251115355896874189 |