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 | 1 |
| 2 | 15 |
| 3 | 175 |
| 4 | 3675 |
| 5 | 14553 |
| 6 | 231231 |
| 7 | 920205 |
| 8 | 234652275 |
| 9 | 2807136475 |
| 10 | 14933966047 |
| 11 | 59612442981 |
| 12 | 11425718238025 |
| 13 | 15211755050625 |
| 14 | 243077636829375 |
| 15 | 971230202264925 |
| 16 | 993568496917018275 |
| 17 | 3970836034391543625 |