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) |
|---|---|
| 66 | 1 |
| 67 | 67 |
| 68 | 2278 |
| 69 | 52394 |
| 70 | 916895 |
| 71 | 13019909 |
| 72 | 156238908 |
| 73 | 1629348612 |
| 74 | 15071474661 |
| 75 | 125595622175 |
| 76 | 954526728530 |
| 77 | 6681687099710 |
| 78 | 43430966148115 |
| 79 | 263926640438545 |
| 80 | 1508152231077400 |
| 81 | 8144022047817960 |
| 82 | 41738112995067045 |