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) |
|---|---|
| 0 | 1 |
| 1 | 46 |
| 2 | 2117 |
| 3 | 97428 |
| 4 | 4483805 |
| 5 | 206352458 |
| 6 | 9496696873 |
| 7 | 437054408616 |
| 8 | 20113999493209 |
| 9 | 925681031096230 |
| 10 | 42601441429919789 |
| 11 | 1960591986807406524 |
| 12 | 90229832834570619893 |
| 13 | 4152532902377055921602 |
| 14 | 191106743342179143013585 |
| 15 | 8795062726642617634546512 |