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 | 81 |
| 3 | 14974 |
| 4 | 18584111 |
| 5 | 151596413811 |
| 6 | 8153351029428092 |
| 7 | 2876868686935789680075 |
| 8 | 6662940552094334528016043729 |
| 9 | 101291421007307048419298014635301970 |