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) |
|---|---|
| 65 | 1 |
| 66 | 66 |
| 67 | 2211 |
| 68 | 50116 |
| 69 | 864501 |
| 70 | 12103014 |
| 71 | 143218999 |
| 72 | 1473109704 |
| 73 | 13442126049 |
| 74 | 110524147514 |
| 75 | 828931106355 |
| 76 | 5727160371180 |
| 77 | 36749279048405 |
| 78 | 220495674290430 |
| 79 | 1244225590638855 |
| 80 | 6635869816740560 |
| 81 | 33594090947249085 |