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) |
|---|---|
| 1 | 7 |
| 2 | 87 |
| 3 | 774 |
| 4 | 7071 |
| 5 | 64189 |
| 6 | 588529 |
| 7 | 5400933 |
| 8 | 49414072 |
| 9 | 452274232 |
| 10 | 4141178883 |
| 11 | 37915462501 |
| 12 | 347125927592 |
| 13 | 3178043159907 |
| 14 | 29096212160166 |
| 15 | 266386963989786 |
| 16 | 2438870587989546 |
| 17 | 22328758454009391 |
| 18 | 204428063085791198 |