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 | 50 |
| 2 | 1747 |
| 3 | 47059 |
| 4 | 1070499 |
| 5 | 21632718 |
| 6 | 400993828 |
| 7 | 6962188526 |
| 8 | 114852977638 |
| 9 | 1818933416948 |
| 10 | 27867476494858 |
| 11 | 415428832366407 |
| 12 | 6052984236034862 |
| 13 | 86509041863415952 |
| 14 | 1216196228905636823 |
| 15 | 16857689384122403297 |