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 | 100 |
| 2 | 1000 |
| 3 | 30000 |
| 4 | 100000 |
| 5 | 1000000 |
| 6 | 30000000 |
| 7 | 700000000 |
| 8 | 1000000000 |
| 9 | 90000000000 |
| 10 | 100000000000 |
| 11 | 0 |
| 12 | 30000000000000 |
| 13 | 0 |
| 14 | 7000000000000000 |
| 15 | 30000000000000000 |