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 | 72156649 |
| 2 | 31042159 |
| 3 | 35939923 |
| 4 | 93992359 |
| 5 | 98805767 |
| 6 | 80576723 |
| 7 | 77766467 |
| 8 | 36947063 |
| 9 | 33374293 |
| 10 | 33742937 |
| 11 | 42937337 |
| 12 | 33773767 |
| 13 | 25824709 |
| 14 | 87352039 |
| 15 | 15286211 |
| 16 | 28621199 |
| 17 | 50798479 |
| 18 | 40296043 |
| 19 | 51028079 |
| 20 | 80798423 |
| 21 | 84234877 |