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 | 5 |
| 2 | 101 |
| 3 | 4241 |
| 4 | 305353 |
| 5 | 33588829 |
| 6 | 209594293 |
| 7 | 1100370038249 |
| 8 | 23023126954133 |
| 9 | 102360822438075317 |
| 10 | 42991545423991633141 |
| 11 | 4350744396907953273869 |
| 12 | 13052233190723859821607001 |
| 13 | 9162667699888149594768114701 |
| 14 | 7440086172309177470951709137213 |
| 15 | 364172638960396581472899447242531 |