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 | 4999999999 |
| 2 | 1666666666 |
| 3 | 666666666 |
| 4 | 380952380 |
| 5 | 207792207 |
| 6 | 159840159 |
| 7 | 112828348 |
| 8 | 95013343 |
| 9 | 74358271 |
| 10 | 56409724 |
| 11 | 50950713 |
| 12 | 41311372 |
| 13 | 36273411 |
| 14 | 33742734 |
| 15 | 30153115 |
| 16 | 26170720 |
| 17 | 23065826 |
| 18 | 21931483 |
| 19 | 19640105 |
| 20 | 18256894 |
| 21 | 17506397 |
| 22 | 15954848 |
| 23 | 14993294 |
| 24 | 13813524 |
| 25 | 12531256 |