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 | 33 |
| 2 | 1089 |
| 3 | 20129 |
| 4 | 330951 |
| 5 | 5963040 |
| 6 | 111550389 |
| 7 | 2067672443 |
| 8 | 37988878275 |
| 9 | 698017127422 |
| 10 | 12848172794534 |
| 11 | 236570382445377 |
| 12 | 4354636068325921 |
| 13 | 80147467353233653 |
| 14 | 1475176781227114397 |
| 15 | 27152663805860158867 |