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 | 26 |
| 2 | 676 |
| 3 | 14974 |
| 4 | 327899 |
| 5 | 7104784 |
| 6 | 153718531 |
| 7 | 3323115736 |
| 8 | 71828785449 |
| 9 | 1552463878141 |
| 10 | 33553506212607 |
| 11 | 725189754458127 |
| 12 | 15673455950921338 |
| 13 | 338748698841773309 |
| 14 | 7321337736630455158 |
| 15 | 158235245543724632042 |