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 | 17 |
2 | 19999999 |
3 | 99899999999999 |
4 | 299989999999999999999999999999999999999 |
5 | 999999999998999999999999999999999999999999999999999999999 |
6 | 9999999999999999999999999999999999999999999999999999999999999991999999999999999999999999999999999999999999999999 |