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) |
|---|---|
| 60 | 1 |
| 61 | 61 |
| 62 | 1891 |
| 63 | 39711 |
| 64 | 635376 |
| 65 | 8259888 |
| 66 | 90858768 |
| 67 | 869648208 |
| 68 | 7392009768 |
| 69 | 56672074888 |
| 70 | 396704524216 |
| 71 | 2560547383576 |
| 72 | 15363284301456 |
| 73 | 86270750308176 |
| 74 | 456002537343216 |
| 75 | 2280012686716080 |
| 76 | 10830060261901380 |