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 | 65 |
| 2 | 4225 |
| 3 | 69852 |
| 4 | 708519 |
| 5 | 9908740 |
| 6 | 196218615 |
| 7 | 3647921173 |
| 8 | 58576420100 |
| 9 | 923989193674 |
| 10 | 15401563228402 |
| 11 | 262861087544592 |
| 12 | 4415950575544932 |
| 13 | 73179716713561551 |
| 14 | 1215743329351151607 |
| 15 | 20324632650740759847 |