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 | 341 |
| 4 | 19841 |
| 5 | 1683981 |
| 6 | 143771891 |
| 7 | -15351301839 |
| 8 | -27396364105599 |
| 9 | -24059921739904039 |
| 10 | -21285850978489377989 |
| 11 | -20814945866103868804819 |
| 12 | -22980130985849165090290239 |
| 13 | -28698856680135265507625861339 |
| 14 | -40335646598356375740067161474269 |