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) |
|---|---|
| 0 | 5 |
| 1 | 125 |
| 2 | 3125 |
| 3 | 78125 |
| 4 | 1953125 |
| 5 | 48828125 |
| 6 | 1220703125 |
| 7 | 30517578125 |
| 8 | 762939453125 |
| 9 | 19073486328125 |
| 10 | 476837158203125 |
| 11 | 11920928955078125 |
| 12 | 298023223876953125 |
| 13 | 7450580596923828125 |
| 14 | 186264514923095703125 |
| 15 | 4656612873077392578125 |
| 16 | 116415321826934814453125 |
| 17 | 2910383045673370361328125 |