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 | 71 |
| 2 | 7235 |
| 3 | 9701 |
| 4 | 798981 |
| 5 | 997001 |
| 6 | 35324118 |
| 7 | 64675883 |
| 8 | 99970001 |
| 9 | 3297392379 |
| 10 | 6702607622 |
| 11 | 7890726434 |
| 12 | 8812181189 |
| 13 | 9999700001 |
| 14 | 897807218979 |
| 15 | 917811219179 |
| 16 | 979998999801 |
| 17 | 999997000001 |
| 18 | 46193210013657 |
| 19 | 49751928874867 |