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) |
|---|---|
| 64 | 1 |
| 65 | 65 |
| 66 | 2145 |
| 67 | 47905 |
| 68 | 814385 |
| 69 | 11238513 |
| 70 | 131115985 |
| 71 | 1329890705 |
| 72 | 11969016345 |
| 73 | 97082021465 |
| 74 | 718406958841 |
| 75 | 4898229264825 |
| 76 | 31022118677225 |
| 77 | 183746395242025 |
| 78 | 1023729916348425 |
| 79 | 5391644226101705 |
| 80 | 26958221130508525 |