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 | 0 |
| 2 | 41 |
| 3 | 340 |
| 4 | 9738 |
| 5 | 268615 |
| 6 | 7455411 |
| 7 | 209156119 |
| 8 | 5850560104 |
| 9 | 164070075524 |
| 10 | 4598093771759 |
| 11 | 128918622840447 |
| 12 | 3614049889811873 |
| 13 | 101322289968443168 |
| 14 | 2840562813679842551 |
| 15 | 79635815085572716192 |
| 16 | 2232600346263905624578 |