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 | 821 |
| 2 | 90367894271 |
| 3 | 188372457491 |
| 4 | 1938510215909 |
| 5 | 67717549154641 |
| 6 | 95168980930291 |
| 7 | 772155318141637 |
| 8 | 1558489460499871 |
| 9 | 7505006230374799 |
| 10 | 8237815094854781 |
| 11 | 23021614989689299 |
| 12 | 39712513595115047 |
| 13 | 919042243755035867 |
| 14 | 3573813286514042801 |
| 15 | 7597919404531928707 |