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 | 5 |
| 2 | 7 |
| 3 | 19 |
| 4 | 43 |
| 5 | 379 |
| 6 | 1531 |
| 7 | 3067 |
| 8 | 24571 |
| 9 | 98299 |
| 10 | 100663291 |
| 11 | 6442450939 |
| 12 | 51539607547 |
| 13 | 844424930131963 |
| 14 | 13510798882111483 |
| 15 | 55340232221128654843 |
| 16 | 1947111321950560360698936123457531 |
| 17 | 133804471191183738849214309635890169035882491 |