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 | 239 |
| 2 | 10511 |
| 3 | 142177 |
| 4 | 1065625 |
| 5 | 5773556 |
| 6 | 26250443 |
| 7 | 108796955 |
| 8 | 427868778 |
| 9 | 1623374603 |
| 10 | 5968786086 |
| 11 | 21245965257 |
| 12 | 73014123464 |
| 13 | 241654125566 |
| 14 | 769129639555 |
| 15 | 2353337396568 |
| 16 | 6926814314231 |
| 17 | 19640014398963 |
| 18 | 53740631657012 |