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) |
|---|---|
| 58 | 1 |
| 59 | 59 |
| 60 | 1770 |
| 61 | 35990 |
| 62 | 557845 |
| 63 | 7028847 |
| 64 | 74974368 |
| 65 | 696190560 |
| 66 | 5743572120 |
| 67 | 42757703560 |
| 68 | 290752384208 |
| 69 | 1823810410032 |
| 70 | 10638894058520 |
| 71 | 58104729088840 |
| 72 | 298824321028320 |
| 73 | 1454278362337824 |
| 74 | 6726037425812436 |