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 | 5281250 |
| 2 | 9031250 |
| 3 | 21125000 |
| 4 | 26281250 |
| 5 | 36125000 |
| 6 | 42781250 |
| 7 | 47531250 |
| 8 | 52531250 |
| 9 | 81281250 |
| 10 | 84500000 |
| 11 | 87781250 |
| 12 | 105125000 |
| 13 | 116281250 |
| 14 | 126953125 |
| 15 | 144500000 |
| 16 | 166015625 |
| 17 | 166531250 |
| 18 | 171125000 |
| 19 | 190125000 |
| 20 | 210125000 |
| 21 | 236531250 |
| 22 | 241340450 |
| 23 | 247531250 |
| 24 | 253906250 |
| 25 | 258781250 |