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 | 1 |
| 2 | 5 |
| 3 | 29 |
| 4 | 19 |
| 5 | 2309 |
| 6 | 30029 |
| 7 | 8369 |
| 8 | 929 |
| 9 | 46027 |
| 10 | 81894851 |
| 11 | 876817 |
| 12 | 38669 |
| 13 | 304250263527209 |
| 14 | 92608862041 |
| 15 | 59799107 |
| 16 | 1143707681 |
| 17 | 69664915493 |
| 18 | 1146665184811 |
| 19 | 17975352936245519 |
| 20 | 2140320249725509 |