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 | 390625 |
| 2 | 781250 |
| 3 | 1171875 |
| 4 | 1562500 |
| 5 | 2343750 |
| 6 | 2734375 |
| 7 | 3125000 |
| 8 | 3515625 |
| 9 | 4296875 |
| 10 | 4687500 |
| 11 | 5468750 |
| 12 | 6250000 |
| 13 | 7031250 |
| 14 | 7421875 |
| 15 | 8203125 |
| 16 | 8593750 |
| 17 | 8984375 |
| 18 | 9375000 |
| 19 | 10546875 |
| 20 | 10937500 |
| 21 | 12109375 |
| 22 | 12500000 |
| 23 | 12890625 |
| 24 | 14062500 |
| 25 | 14843750 |
| 26 | 16406250 |
| 27 | 16796875 |
| 28 | 17187500 |