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 | 6 |
| 1 | 42 |
| 2 | 546 |
| 3 | 9198 |
| 4 | 170898 |
| 5 | 3304182 |
| 6 | 65019786 |
| 7 | 1290094638 |
| 8 | 25700456418 |
| 9 | 513002215782 |
| 10 | 10250010815226 |
| 11 | 204900053024478 |
| 12 | 4097000260921938 |
| 13 | 81930001287820182 |
| 14 | 1638500006371967466 |
| 15 | 32769000031591352718 |
| 16 | 655370000156882923458 |