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) |
|---|---|
| 70 | 1 |
| 71 | 71 |
| 72 | 2556 |
| 73 | 62196 |
| 74 | 1150626 |
| 75 | 17259390 |
| 76 | 218618940 |
| 77 | 2404808340 |
| 78 | 23446881315 |
| 79 | 205811513765 |
| 80 | 1646492110120 |
| 81 | 12124169174520 |
| 82 | 82848489359220 |
| 83 | 528955739755020 |
| 84 | 3173734438530120 |
| 85 | 17984495151670680 |