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 | 130 |
| 2 | 3526 |
| 3 | 44803 |
| 4 | 358118 |
| 5 | 2086196 |
| 6 | 9647292 |
| 7 | 37395816 |
| 8 | 126087157 |
| 9 | 379654704 |
| 10 | 1040942916 |
| 11 | 2637614941 |
| 12 | 6248087300 |
| 13 | 13964013792 |
| 14 | 29662913488 |
| 15 | 60254807616 |
| 16 | 117633453657 |
| 17 | 221649696158 |
| 18 | 404535879938 |
| 19 | 717351048575 |
| 20 | 1239192239626 |