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 | 7 |
| 2 | 85 |
| 3 | 1531 |
| 4 | 36745 |
| 5 | 1102351 |
| 6 | 39684637 |
| 7 | 1666754755 |
| 8 | 80004228241 |
| 9 | 4320228325015 |
| 10 | 259213699500901 |
| 11 | 17108104167059467 |
| 12 | 1231783500028281625 |
| 13 | 96079113002205966751 |
| 14 | 8070645492185301207085 |
| 15 | 726358094296677108637651 |