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) |
|---|---|
| 45 | 1 |
| 46 | 46 |
| 47 | 1081 |
| 48 | 17296 |
| 49 | 211876 |
| 50 | 2118760 |
| 51 | 18009460 |
| 52 | 133784560 |
| 53 | 886322710 |
| 54 | 5317936260 |
| 55 | 29248649430 |
| 56 | 148902215280 |
| 57 | 707285522580 |
| 58 | 3155581562280 |
| 59 | 13298522298180 |
| 60 | 53194089192720 |
| 61 | 202802465047245 |
| 62 | 739632519584070 |
| 63 | 2588713818544245 |
| 64 | 8719878125622720 |
| 65 | 28339603908273840 |