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 | 3 |
| 2 | 161 |
| 3 | 3626 |
| 4 | 87901 |
| 5 | 2104533 |
| 6 | 50519822 |
| 7 | 1212025201 |
| 8 | 29081585941 |
| 9 | 697771332458 |
| 10 | 16742115379799 |
| 11 | 401704920782027 |
| 12 | 9638379919762234 |
| 13 | 231260211351014481 |
| 14 | 5548783725157622511 |
| 15 | 133135746167019232072 |
| 16 | 3194416612541988731537 |