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) |
|---|---|
| 0 | 2187 |
| 1 | 62748517 |
| 2 | 3404825447 |
| 3 | 42618442977 |
| 4 | 271818611107 |
| 5 | 1174711139837 |
| 6 | 3938980639167 |
| 7 | 11047398519097 |
| 8 | 27136050989627 |
| 9 | 60170087060757 |
| 10 | 122987386542487 |
| 11 | 235260548044817 |
| 12 | 425927596977747 |
| 13 | 736141813551277 |