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 | 41 |
| 2 | 281 |
| 3 | 90481 |
| 4 | 29134601 |
| 5 | 3020733700601 |
| 6 | 313195711516578281 |
| 7 | 5280544535667472291277149119296546201 |
| 8 | 547497418496144666543167613835090178297001 |