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 | 3 |
| 1 | 89 |
| 2 | 2584 |
| 3 | 75025 |
| 4 | 2178309 |
| 5 | 63245986 |
| 6 | 1836311903 |
| 7 | 53316291173 |
| 8 | 1548008755920 |
| 9 | 44945570212853 |
| 10 | 1304969544928657 |
| 11 | 37889062373143906 |
| 12 | 1100087778366101931 |
| 13 | 31940434634990099905 |
| 14 | 927372692193078999176 |
| 15 | 26925748508234281076009 |