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) |
|---|---|
| 44 | 1 |
| 45 | 45 |
| 46 | 1035 |
| 47 | 16215 |
| 48 | 194580 |
| 49 | 1906884 |
| 50 | 15890700 |
| 51 | 115775100 |
| 52 | 752538150 |
| 53 | 4431613550 |
| 54 | 23930713170 |
| 55 | 119653565850 |
| 56 | 558383307300 |
| 57 | 2448296039700 |
| 58 | 10142940735900 |
| 59 | 39895566894540 |
| 60 | 149608375854525 |
| 61 | 536830054536825 |
| 62 | 1849081298960175 |
| 63 | 6131164307078475 |
| 64 | 19619725782651120 |