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 | 9 |
| 2 | 433 |
| 3 | 36729 |
| 4 | 3824001 |
| 5 | 450954009 |
| 6 | 58160561761 |
| 7 | 7989733343097 |
| 8 | 1149808762915201 |
| 9 | 171540347534028009 |
| 10 | 26338900959100106433 |
| 11 | 4140153621102790276137 |
| 12 | 663592912043903970182289 |
| 13 | 108127319237119098011204937 |
| 14 | 17868369859451104998973346433 |
| 15 | 2989001418301890511076878884729 |