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 | 1 |
| 2 | 5 |
| 3 | 25 |
| 4 | 35 |
| 5 | 625 |
| 6 | 175 |
| 7 | 15625 |
| 8 | 385 |
| 9 | 1225 |
| 10 | 4375 |
| 11 | 9765625 |
| 12 | 1925 |
| 13 | 244140625 |
| 14 | 109375 |
| 15 | 30625 |
| 16 | 5005 |
| 17 | 152587890625 |
| 18 | 13475 |
| 19 | 3814697265625 |
| 20 | 48125 |
| 21 | 765625 |
| 22 | 68359375 |
| 23 | 2384185791015625 |
| 24 | 25025 |
| 25 | 1500625 |
| 26 | 1708984375 |
| 27 | 148225 |
| 28 | 1203125 |
| 29 | 37252902984619140625 |
| 30 | 336875 |
| 31 | 931322574615478515625 |