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 | 3025 |
| 2 | 50625 |
| 3 | 70225 |
| 4 | 302500 |
| 5 | 455625 |
| 6 | 765625 |
| 7 | 2640625 |
| 8 | 5062500 |
| 9 | 7022500 |
| 10 | 30250000 |
| 11 | 45562500 |
| 12 | 76562500 |
| 13 | 264062500 |
| 14 | 506250000 |
| 15 | 702250000 |
| 16 | 3025000000 |
| 17 | 4556250000 |
| 18 | 7656250000 |
| 19 | 26406250000 |
| 20 | 34363890625 |
| 21 | 50625000000 |
| 22 | 70225000000 |
| 23 | 302500000000 |
| 24 | 455625000000 |